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Balmages I, Reinis A, Kistkins S, Bliznuks D, Plorina EV, Lihachev A, Lihacova I. Laser speckle imaging for visualization of hidden effects for early detection of antibacterial susceptibility in disc diffusion tests. Front Microbiol 2023; 14:1221134. [PMID: 37455709 PMCID: PMC10340531 DOI: 10.3389/fmicb.2023.1221134] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2023] [Accepted: 06/14/2023] [Indexed: 07/18/2023] Open
Abstract
Rapid identification of effective antibiotic treatment is crucial for increasing patient survival and preventing the formation of new antibiotic-resistant bacteria due to preventative antibiotic use. Currently utilized "gold standard" methods require 16-24 h to determine the most appropriate antibiotic for the patient's treatment. The proposed technique of laser speckle imaging with subpixel correlation analysis allows for identifying dynamics and changes in the zone of inhibition, which are impossible to observe with classical methods. Furthermore, it obtains the resulting zone of inhibition diameter earlier than the disk diffusion method which is recommended by the European Committee on Antimicrobial Susceptibility Testing (EUCAST). These results could improve mathematical models of changes in the diameter of the zone of inhibition around the disc containing the antimicrobial agent, thereby speeding up and facilitating epidemiological analysis.
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Affiliation(s)
- Ilya Balmages
- Biophotonics Laboratory, Institute of Atomic Physics and Spectroscopy, University of Latvia, Riga, Latvia
- Institute of Computer Control, Automation and Computer Engineering, Riga Technical University, Riga, Latvia
| | - Aigars Reinis
- Pauls Stradins Clinical University Hospital, Riga, Latvia
- Department of Biology and Microbiology, Riga Stradins University, Riga, Latvia
| | - Svjatoslavs Kistkins
- Biophotonics Laboratory, Institute of Atomic Physics and Spectroscopy, University of Latvia, Riga, Latvia
- Pauls Stradins Clinical University Hospital, Riga, Latvia
| | - Dmitrijs Bliznuks
- Institute of Computer Control, Automation and Computer Engineering, Riga Technical University, Riga, Latvia
| | - Emilija Vija Plorina
- Biophotonics Laboratory, Institute of Atomic Physics and Spectroscopy, University of Latvia, Riga, Latvia
| | - Alexey Lihachev
- Biophotonics Laboratory, Institute of Atomic Physics and Spectroscopy, University of Latvia, Riga, Latvia
| | - Ilze Lihacova
- Biophotonics Laboratory, Institute of Atomic Physics and Spectroscopy, University of Latvia, Riga, Latvia
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Panahi M, Rad VF, Sasan S, Jamali R, Moradi AR, Darudi A. Detection of intralayer alignment in multicomponent lipids by dynamic speckle pattern analysis. JOURNAL OF BIOPHOTONICS 2022; 15:e202200034. [PMID: 35460181 DOI: 10.1002/jbio.202200034] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/09/2022] [Revised: 04/08/2022] [Accepted: 04/19/2022] [Indexed: 06/14/2023]
Abstract
Multicomponent mixtures of bilayer lipids, thanks to the coexistence of liquid-crystalline phases in their structures, may be used in the development of functional membranes. In such membranes interlayer ordering distributes across membrane lamellae, resulting in long-range alignment of phase-separated domains. In this paper, we explore the dynamics of this phenomenon by laser speckle pattern analysis. We show that cholesterol content decreases the activity, and the rate of the domains size development is related to the change of physical roughness of the multicomponent lipid mixture. Our results are in agreement with the previous experimental reports. However, our experimental procedure is an easy-to-implement and effective methodology.
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Affiliation(s)
- Majid Panahi
- Department of Physics, Faculty of Science, University of Zanjan, Zanjan, Iran
- Department of Physics, Institute for Advanced Studies in Basic Sciences (IASBS), Zanjan, Iran
| | - Vahideh Farzam Rad
- Department of Physics, Institute for Advanced Studies in Basic Sciences (IASBS), Zanjan, Iran
| | - Shiva Sasan
- Department of Physics, Faculty of Science, University of Zanjan, Zanjan, Iran
| | - Ramin Jamali
- Department of Physics, Institute for Advanced Studies in Basic Sciences (IASBS), Zanjan, Iran
| | - Ali-Reza Moradi
- Department of Physics, Institute for Advanced Studies in Basic Sciences (IASBS), Zanjan, Iran
- School of Nano Science, Institute for Research in Fundamental Sciences (IPM), Tehran, Iran
| | - Ahmad Darudi
- Department of Physics, Faculty of Science, University of Zanjan, Zanjan, Iran
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Balmages I, Liepins J, Zolins S, Bliznuks D, Lihacova I, Lihachev A. Laser speckle imaging for early detection of microbial colony forming units. BIOMEDICAL OPTICS EXPRESS 2021; 12:1609-1620. [PMID: 33796376 PMCID: PMC7984771 DOI: 10.1364/boe.416456] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/01/2020] [Revised: 01/20/2021] [Accepted: 02/05/2021] [Indexed: 06/12/2023]
Abstract
In this study, an optical contactless laser speckle imaging technique for the early identification of bacterial colony-forming units was tested. The aim of this work is to compare the laser speckle imaging method for the early assessment of microbial activity with standard visual inspection under white light illumination. In presented research, the growth of Vibrio natriegens bacterial colonies on the solid medium was observed and analyzed. Both - visual examination under white light illumination and laser speckle correlation analysis were performed. Based on various experiments and comparisons with the theoretical Gompertz model, colony radius growth curves were obtained. It was shown that the Gompertz model can be used to describe both types of analysis. A comparison of the two methods shows that laser speckle contrast imaging, combined with signal processing, can detect colony growth earlier than standard CFU counting method under white light illumination.
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Affiliation(s)
- Ilya Balmages
- University of Latvia, Institute of Atomic Physics and Spectroscopy, Riga, Latvia
| | - Janis Liepins
- University of Latvia, Institute of Microbiology and Biotechnology, Riga, Latvia
| | - Stivens Zolins
- University of Latvia, Institute of Microbiology and Biotechnology, Riga, Latvia
| | - Dmitrijs Bliznuks
- Riga Technical University, Faculty of Computer Science and Information Technology, Riga, Latvia
| | - Ilze Lihacova
- University of Latvia, Institute of Atomic Physics and Spectroscopy, Riga, Latvia
| | - Alexey Lihachev
- University of Latvia, Institute of Atomic Physics and Spectroscopy, Riga, Latvia
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Farzam Rad V, Panahi M, Jamali R, Darudi A, Moradi AR. Non-invasive in situ monitoring of bone scaffold activity by speckle pattern analysis. BIOMEDICAL OPTICS EXPRESS 2020; 11:6324-6336. [PMID: 33282493 PMCID: PMC7687950 DOI: 10.1364/boe.401740] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/02/2020] [Revised: 10/05/2020] [Accepted: 10/06/2020] [Indexed: 06/01/2023]
Abstract
Scaffold-based bone tissue engineering aims to develop 3D scaffolds that mimic the extracellular matrix to regenerate bone defects and damages. In this paper, we provide a laser speckle analysis to characterize the highly porous scaffold. The experimental procedure includes in situ acquisition of speckle patterns of the bone scaffold at different times under preserved environmental conditions, and follow-up statistical post-processing toward examining its internal activity. The activity and overall viscoelastic properties of scaffolds are expressed via several statistical parameters, and the variations in the computed parameters are attributed to time-varying activity of the samples during their internal substructure migration.
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Affiliation(s)
- Vahideh Farzam Rad
- Department of Physics, Institute for Advanced Studies in Basic Sciences (IASBS), Zanjan 45137-66731, Iran
| | - Majid Panahi
- Department of Physics, Faculty of Science, University of Zanjan, Zanjan 45371-38791, Iran
| | - Ramin Jamali
- Department of Physics, Institute for Advanced Studies in Basic Sciences (IASBS), Zanjan 45137-66731, Iran
| | - Ahmad Darudi
- Department of Physics, Faculty of Science, University of Zanjan, Zanjan 45371-38791, Iran
| | - Ali-Reza Moradi
- Department of Physics, Institute for Advanced Studies in Basic Sciences (IASBS), Zanjan 45137-66731, Iran
- School of Nano Science, Institute for Research in Fundamental Sciences (IPM), Tehran 19395-5531, Iran
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Farzam Rad V, Ramírez-Miquet EE, Cabrera H, Habibi M, Moradi AR. Speckle pattern analysis of crumpled papers. APPLIED OPTICS 2019; 58:6549-6554. [PMID: 31503584 DOI: 10.1364/ao.58.006549] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/04/2019] [Accepted: 07/19/2019] [Indexed: 06/10/2023]
Abstract
In this paper, we show that laser speckle analysis (LSA) can provide valuable information about the structure of crumpled thin sheets. Crumpling and folding of slender objects are present in several phenomena and in various ranges of size, e.g., paper compaction, cortical folding in brains, DNA packing in viral capsids, and flower buds, to name a few. The analysis of laser speckles, both numerical and graphical, is a source of information about the activity of biological or non-biological materials, and the development of digital electronics, which brought the ease of image processing, has opened new perspectives for a spectrum of LSA applications. LSA is applied on randomly crumpled and one-, two-, and three-times folded papers, and appreciable differences in LSA parameters are observed. The methodology can be applied for easy-to-implement quantitative assessment of similar phenomena and samples.
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Digital imaging information technology for biospeckle activity assessment relative to bacteria and parasites. Lasers Med Sci 2017. [DOI: 10.1007/s10103-017-2256-0] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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