1
|
Sayed RH, Soliman RT, Elsaady SA. Development of a lateral flow device for rapid simultaneous multiple detections of some common bacterial causes of bovine mastitis. J Adv Vet Anim Res 2023; 10:292-300. [PMID: 37534067 PMCID: PMC10390667 DOI: 10.5455/javar.2023.j681] [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: 01/18/2023] [Revised: 03/29/2023] [Accepted: 04/02/2023] [Indexed: 08/04/2023] Open
Abstract
Objective This work was conducted for the development of a 5-combi lateral flow immunochromatographic kit (LFK) for rapid and simultaneous identification of the common bacterial causes of bovine mastitis. The following pathogens are the identification targets of this kit: Escherichia coli, Staphylococcus aureus, Klebsiella pneumoniae, Streptococcus agalactiae, and Streptococcus pyogenes in milk samples from suspected bovine mastitis cases. The conventional microbiological identification of these agents is not only time-consuming and requires a fully equipped laboratory but also requires experienced personnel. Materials and Methods Rabbit polyclonal antibodies (PAbs) specific to the antigenic components of the selected pathogens were prepared, and the pathogen-specific IgG was separated, purified, and conjugated with nanogold that was laid on the conjugate pad. Guinea pig PAbs specific to the microbial antigens of the selected pathogens were prepared, and their IgG content was separated, purified, and used as a capture antibody in the test (T) line on the nitrocellulose (NC) strips. Goat anti-rabbit IgG antibodies were used to capture the rabbit antibodies in the control (C) line of NC strips. The kit was held in a device comprising five strip-holding channels for the above-mentioned five bacterial species antigens. The developed LFK was evaluated, and its sensitivity and specificity were determined. Results The developed kits were applied for the examination of bovine milk samples from suspected mastitis cases, and the average sensitivity, specificity, and accuracy of 5-combi LFK for the detection of the five selected bacterial species compared to bacteriological examination (gold standard test) were 93.90%, 80.83%, and 90.53%, respectively. The minimal microbial count that gave positive results using the developed LFK was 103 colony forming unit/ml. Treatment of the milk samples with an application buffer and its pre-incubation in trypticase soy broth for 6 h at 37°C before testing significantly increased the sensitivity of the prepared LFK. The developed kit proved simple and convenient, and the results could be obtained in less than 10 min.
Collapse
Affiliation(s)
| | - Rafik Twfik Soliman
- Department of Microbiology, Faculty of Veterinary Medicine, Cairo University, Cairo, Egypt
| | | |
Collapse
|
2
|
Aboelqassem ZM, Ibrahim HM, Sayed RH, Sobhy HM, Hekal SHA. Preparation and evaluation of a lateral flow immunochromatographic nanogold diagnostic kit for brucellosis in sheep. Vet World 2022; 15:2658-2664. [PMID: 36590134 PMCID: PMC9798059 DOI: 10.14202/vetworld.2022.2658-2664] [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: 06/14/2022] [Accepted: 10/11/2022] [Indexed: 11/23/2022] Open
Abstract
Background and Aim Brucellosis is a zoonotic disease with a worldwide distribution. It has a serious impact on the health of humans and animals, along with a negative impact on the economy. This study aimed to prepare and evaluate the diagnostic performance of a lateral flow immunochromatographic test (LFIT) nanogold diagnostic kit for detecting brucellosis in sheep. Materials and Methods A rapidly developed LFIT, in which lipopolysaccharide conjugates with nanogold molecules, was placed on the conjugate pad. One hundred ovine serum samples were tested to detect Brucella antibodies (Ab) using the prepared lateral flow immunochromatography assay (LFA) kit and Rose Bengal test. The evaluation of specificity, sensitivity, and accuracy for LFIT and Rose Bengal plate test was conducted using the P04310-10 IDEXX brucellosis ovine/caprine Ab enzyme-linked immunosorbent assay (ELISA) test (gold standard). Results The lower amount of Brucella Ab in the ovine serum samples was detected and was 1.58 S/P ratio ELISA titer/100 μL using LFIT and with Rose Bengal to detect 1.86 S/P ratio ELISA. The results showed that the developed LFIT had high specificity with no cross-reactivity with other tested bacteria. The calculated sensitivity, specificity, and accuracy of LFIT and Rose Bengal test using the P04310-10 IDEXX brucellosis ovine/caprine Ab ELISA test (gold standard) were 74% and 89%, 81% and 59%, and 76.9% and 66%, respectively. Conclusion The present results showed interesting results implying that the LFIA strip test could be used as a substantial diagnostic tool for field screening ovine Brucella as an essential step in the control of brucellosis. However, further studies for the validation of the present findings are necessary.
Collapse
Affiliation(s)
| | - Hazem Mohammed Ibrahim
- Veterinary Serum and Vaccine Research Institute, Agricultural Research Center, Giza, Egypt
| | - Rafik Hamed Sayed
- Central Laboratory for evaluation of Veterinary Biologics, Agricultural Research Center, Giza, Egypt
| | - Hassan Mohamed Sobhy
- Department of Natural Resources, Faculty of African Postgraduate Studies, Cairo University, Giza, Egypt
| | - Sahar Hussein Abdalla Hekal
- Department of Natural Resources, Faculty of African Postgraduate Studies, Cairo University, Giza, Egypt,Corresponding author: Sahar Hussein Abdalla Hekal, e-mail: Co-authors: ZMA: , HMI: , RHS: , HMS:
| |
Collapse
|
3
|
Syahruni S, Hartati YW, Yusuf M, Kusumawardani S, Wibawan IWT, Arnafia W, Sibit G, Subroto T. Development of lateral flow assay based on anti-IBDV IgY for the rapid detection of Gumboro disease in poultry. J Virol Methods 2021; 291:114065. [PMID: 33577956 DOI: 10.1016/j.jviromet.2021.114065] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2020] [Revised: 01/11/2021] [Accepted: 01/11/2021] [Indexed: 02/07/2023]
Abstract
The poultry industry faces serious problems against infectious diseases, including Gumboro, which is caused by contagious bursal disease virus (IBDV). IBDV infects the bursa of Fabricius (BF), a lymphoid organ for controlling the B-cell maturation. Thus, it can trigger the secondary infection's vulnerability, leading to the high mortality and morbidity of the chicken. Moreover, managing the Gumboro post-outbreaks also requires considerable time and costs. Besides vaccination programs, the early detection of IBDV is vital as an outbreak control strategy. The most popular diagnostic tool is a lateral flow immunoassay or a rapid test that meets ASSURED (Affordable, Sensitive, Specific, User-friendly, Rapid and Robust, Equipment-free, and Deliverable to end-users) criteria. In this study, the lateral flow immunoassay was successfully developed based on anti-IBDV IgY as the bio receptor. Anti-IBDV IgY was successfully isolated from Isa Brown's egg yolk. The detection system showed an acceptable affinity against the inactivated IBDV sample (1.5 × 103 TCID50). In addition, it did not react with avian influenza and Newcastle disease viruses, demonstrating a good specificity of the test.
Collapse
Affiliation(s)
- Sari Syahruni
- Master of Biotechnology Program, School of Postgraduates, Universitas Padjadjaran, Jl. Dipati Ukur 35, Bandung, West Java, 40132 Indonesia
| | - Yeni Wahyuni Hartati
- Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Padjadjaran, Jl. Raya Bandung-Sumedang Km 21, Jatinangor, Sumedang, West Java, 45363 Indonesia; Research Center for Molecular Biotechnology and Bioinformatics, Universitas Padjadjaran, Jl. Singaperbangsa 2, Bandung,West Java, 40132 Indonesia
| | - Muhammad Yusuf
- Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Padjadjaran, Jl. Raya Bandung-Sumedang Km 21, Jatinangor, Sumedang, West Java, 45363 Indonesia; Research Center for Molecular Biotechnology and Bioinformatics, Universitas Padjadjaran, Jl. Singaperbangsa 2, Bandung,West Java, 40132 Indonesia
| | - Shinta Kusumawardani
- Research Center for Molecular Biotechnology and Bioinformatics, Universitas Padjadjaran, Jl. Singaperbangsa 2, Bandung,West Java, 40132 Indonesia
| | - I Wayan Teguh Wibawan
- Department of Animal Infectious Diseases and Veterinary Public Health, IPB University, Jl. Raya Dramaga, Bogor, West Java, 16680 Indonesia
| | - Wyanda Arnafia
- Research and Development Division, PT. Tekad Mandiri Citra, Jl. Mekar Raya Kav. 9, Bandung, West Java, 40292 Indonesia
| | - Gowinda Sibit
- Research and Development Division, PT. Tekad Mandiri Citra, Jl. Mekar Raya Kav. 9, Bandung, West Java, 40292 Indonesia
| | - Toto Subroto
- Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Padjadjaran, Jl. Raya Bandung-Sumedang Km 21, Jatinangor, Sumedang, West Java, 45363 Indonesia; Research Center for Molecular Biotechnology and Bioinformatics, Universitas Padjadjaran, Jl. Singaperbangsa 2, Bandung,West Java, 40132 Indonesia.
| |
Collapse
|