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Thongmee P, Ngernpimai S, Srichaiyapol O, Mongmonsin U, Teerasong S, Charoensri N, Wongwattanakul M, Lulitanond A, Kuwatjanakul W, Wonglakorn L, Kendal RP, Chompoosor A, Daduang J, Tippayawat P. The Evaluation of a Lateral Flow Strip Based on the Covalently Fixed "End-On" Orientation of an Antibody for Listeria monocytogenes Detection. Anal Chem 2024; 96:8543-8551. [PMID: 38748432 PMCID: PMC11140673 DOI: 10.1021/acs.analchem.4c00533] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2024] [Revised: 05/01/2024] [Accepted: 05/07/2024] [Indexed: 05/29/2024]
Abstract
In this study, the covalently fixed "end-on" orientation of a monoclonal Listeria monocytogenes antibody (mAb-Lis) to amino terminated oligo (ethylene glycol)-capped gold nanoparticles (NH2-TEG-AuNPs) was used to fabricate an in-house lateral flow strip (LFS), namely, the fixed "end-on" Lis-mAb-NH-TEG-AuNPs LFS. The aim was to evaluate the performance of the fixed "end-on" Lis-mAb-NH-TEG-AuNPs LFS in detecting L. monocytogenes. The proposed LFS enabled the sensitive detection of L. monocytogenes in 15 min with a visual limit of detection of 102 CFU/mL. Quantitative analysis indicated an LOD at 10 CFU/mL. The fixed "end-on" Lis-mAb-NH-TEG-AuNPs LFS showed no cross-reactivity with other pathogenic bacteria and practical performance across different food matrices, including human blood, milk, and mushroom samples. Furthermore, the clinical performance of the fixed "end-on" Lis-mAb-NH-TEG-AuNPs LFS for detecting L. monocytogenes was evaluated by using 12 clinical samples validated by the hemoculture method. It demonstrated excellent concordance with the reference methods, with no false-positive or false-negative results observed. Therefore, the fixed "end-on" Lis-mAb-NH-TEG-AuNPs LFS serves as a promising candidate for a point-of-care test (POCT), enabling the rapid, precise, and highly sensitive detection of L. monocytogenes in clinical samples and contaminated food.
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Affiliation(s)
- Patsara Thongmee
- Centre
for Research and Development of Medical Diagnostic Laboratories (CMDL),
Faculty of Associated Medical Sciences, Khon Kaen University, Khon Kaen 40002, Thailand
- Department
of Medical Technology, Faculty of Associated Medical Sciences, Khon Kaen University, Khon Kaen 40002, Thailand
| | - Sawinee Ngernpimai
- Centre
for Innovation and Standard for Medical Technology and Physical Therapy,
Faculty of Associated Medical Sciences, Khon Kaen University, Khon Kaen 40002, Thailand
| | - Oranee Srichaiyapol
- Centre
for Innovation and Standard for Medical Technology and Physical Therapy,
Faculty of Associated Medical Sciences, Khon Kaen University, Khon Kaen 40002, Thailand
| | - Urairat Mongmonsin
- Department
of Medical Technology, Faculty of Associated Medical Sciences, Khon Kaen University, Khon Kaen 40002, Thailand
| | - Saowapak Teerasong
- Department
of Chemistry and Applied Analytical Chemistry Research Unit, School
of Science, King Mongkut’s Institute
of Technology Ladkrabang, Bangkok 10520, Thailand
| | - Nicha Charoensri
- Centre
for Research and Development of Medical Diagnostic Laboratories (CMDL),
Faculty of Associated Medical Sciences, Khon Kaen University, Khon Kaen 40002, Thailand
| | - Molin Wongwattanakul
- Centre
for Research and Development of Medical Diagnostic Laboratories (CMDL),
Faculty of Associated Medical Sciences, Khon Kaen University, Khon Kaen 40002, Thailand
| | - Aroonlug Lulitanond
- Centre
for Research and Development of Medical Diagnostic Laboratories (CMDL),
Faculty of Associated Medical Sciences, Khon Kaen University, Khon Kaen 40002, Thailand
| | - Waewta Kuwatjanakul
- Clinical
Microbiology Unit, Srinagarind Hospital, Faculty of Medicine, Khon Kaen University, Khon Kaen 40002, Thailand
| | - Lumyai Wonglakorn
- Clinical
Microbiology Unit, Srinagarind Hospital, Faculty of Medicine, Khon Kaen University, Khon Kaen 40002, Thailand
| | | | - Apiwat Chompoosor
- Department
of Chemistry and Centre of Excellence for Innovation in Chemistry,
Faculty of Science, Ramkhamhaeng University, Bangkok 10240, Thailand
| | - Jureerut Daduang
- Centre
for Research and Development of Medical Diagnostic Laboratories (CMDL),
Faculty of Associated Medical Sciences, Khon Kaen University, Khon Kaen 40002, Thailand
- Department
of Medical Technology, Faculty of Associated Medical Sciences, Khon Kaen University, Khon Kaen 40002, Thailand
| | - Patcharaporn Tippayawat
- Centre
for Research and Development of Medical Diagnostic Laboratories (CMDL),
Faculty of Associated Medical Sciences, Khon Kaen University, Khon Kaen 40002, Thailand
- Department
of Medical Technology, Faculty of Associated Medical Sciences, Khon Kaen University, Khon Kaen 40002, Thailand
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Du J, Liu K, Liu J, Zhao D, Bai Y. Development of a novel lateral flow immunoassay based on Fe3O4@MIL-100(Fe) for visual detection of Listeria monocytogenes. JOURNAL OF FOOD MEASUREMENT AND CHARACTERIZATION 2023. [DOI: 10.1007/s11694-023-01900-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/19/2023]
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Lactoperoxidase potential in diagnosing subclinical mastitis in cows via image processing. PLoS One 2022; 17:e0263714. [PMID: 35176036 PMCID: PMC8853571 DOI: 10.1371/journal.pone.0263714] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2021] [Accepted: 01/25/2022] [Indexed: 11/19/2022] Open
Abstract
This report describes how image processing harnessed to multivariate analysis techniques can be used as a bio-analytical tool for mastitis screening in cows using milk samples collected from 48 animals (32 from Jersey, 7 from Gir, and 9 from Guzerat cow breeds), totalizing a dataset of 144 sequential images was collected and analyzed. In this context, this methodology was developed based on the lactoperoxidase activity to assess mastitis using recorded images of a cuvette during a simple experiment and subsequent image treatments with an R statistics platform. The color of the sample changed from white to brown upon its exposure to reagents, which is a consequence of lactoperoxidase enzymatic reaction. Data analysis was performed to extract the channels from the RGB (Red-Green-Blue) color system, where the resulting dataset was evaluated with Principal Component Analysis (PCA), Multiple Linear Regression (MLR), and Second-Order Regression (SO). Interesting results in terms of enzymatic activity correlation (R2 = 0.96 and R2 = 0.98 by MLR and SO, respectively) and of somatic cell count (R2 = 0.97 and R2 = 0.99 by MLR and SO, respectively), important mastitis indicators, were obtained using this simple method. Additionally, potential advantages can be accessed such as quality control of the dairy chain, easier bovine mastitis prognosis, lower cost, analytical frequency, and could serve as an evaluative parameter to verify the health of the mammary gland.
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Magacz M, Kędziora K, Sapa J, Krzyściak W. The Significance of Lactoperoxidase System in Oral Health: Application and Efficacy in Oral Hygiene Products. Int J Mol Sci 2019; 20:ijms20061443. [PMID: 30901933 PMCID: PMC6472183 DOI: 10.3390/ijms20061443] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2019] [Revised: 03/13/2019] [Accepted: 03/18/2019] [Indexed: 12/13/2022] Open
Abstract
Lactoperoxidase (LPO) present in saliva are an important element of the nonspecific immune response involved in maintaining oral health. The main role of this enzyme is to oxidize salivary thiocyanate ions (SCN-) in the presence of hydrogen peroxide (H₂O₂) to products that exhibit antimicrobial activity. LPO derived from bovine milk has found an application in food, cosmetics, and medical industries due to its structural and functional similarity to the human enzyme. Oral hygiene products enriched with the LPO system constitute an alternative to the classic fluoride caries prophylaxis. This review describes the physiological role of human salivary lactoperoxidase and compares the results of clinical trials and in vitro studies of LPO alone and complex dentifrices enriched with bovine LPO. The role of reactivators and inhibitors of LPO is discussed together with the possibility of using nanoparticles to increase the stabilization and activity of this enzyme.
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Affiliation(s)
- Marcin Magacz
- Department of Medical Diagnostics, Faculty of Pharmacy, Jagiellonian University Medical College, Medyczna 9, 30-688 Kraków, Poland.
| | - Karolina Kędziora
- Department of Medical Diagnostics, Faculty of Pharmacy, Jagiellonian University Medical College, Medyczna 9, 30-688 Kraków, Poland.
| | - Jacek Sapa
- Department of Pharmacodynamics, Faculty of Pharmacy, Jagiellonian University Medical College, Medyczna 9, 30-688 Kraków, Poland.
| | - Wirginia Krzyściak
- Department of Medical Diagnostics, Faculty of Pharmacy, Jagiellonian University Medical College, Medyczna 9, 30-688 Kraków, Poland.
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