1
|
Montagud AC, Vicente-Alcalde N, Gabaldón-Bravo EM, Hurtado-Sánchez JA, Montagud E, Egoavil CM, Chavarría-Alarcón E, Caballero P, Tuells J. [COVID-19 vaccination at the University of Alicante (Spain): detection of neutralizing antibodies against SARS-CoV-2 by rapid serological test, a cross-sectional study]. Rev Esp Salud Publica 2023; 97:e202312111. [PMID: 38126466] [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] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2023] [Accepted: 11/18/2023] [Indexed: 12/23/2023] Open
Abstract
OBJECTIVE Neutralizing antibodies against SARS-CoV-2 have shown to be an effective tool for the analysis of the immunity generated against COVID-19. Numerous seroprevalence studies carried out in different groups have made it possible to draw a global map of vaccination coverage through the use of rapid lateral flow immunochromatography serological tests for clinical and epidemiological purposes. The objective of our study was to determine the degree of immunity against SARS-CoV-2 associated with the presence of neutralizing antibodies in administrative staff, teachers and students at the University of Alicante by means of a rapid serological test and to learn about their experience with vaccination against COVID-19. METHODS A cross-sectional epidemiological study was designed, based on the prevalence of antibodies against the S protein (spike) of SARS-CoV-2. A total of 888 people participated. The study was carried out with a single test (July 6 to July 22, 2021). Using logistic regression, adjusted Odds Ratios were calculated according to sex, age, type of vaccine, number of vaccine doses received, complete vaccination schedule, and having had COVID-19. RESULTS The vaccines received mostly were Vaxzevria® and Comirnaty®, with 73.3% between both, although 67.2% presented a complete regimen. The results of the OJABIO rapid neutralizing antibody test gave a positive result in 61.4% of the sample. There was a high association between the variables COVID-19 infection, two doses of vaccine, Spikevax® or Comirnaty® vaccine, and eighteen/twenty-nine years old group with a positive result on the OJABIO test. A total of 712 subjects answered the parallel survey (80%) on adverse effects and preferences between the different vaccines against COVID-19. CONCLUSIONS The vaccination status against COVID-19 in the university community after six months of the start of national immunization strategies reflects low coverage despite the excellent willingness to get vaccinated. Neutralizing antibodies (NAb) rapid tests can be useful to guide immunization strategies and decide when to administer new booster doses.
Collapse
Affiliation(s)
- Ana C Montagud
- Servicio de Inmunología; Plataforma oncológica; Hospital Quirónsalud Torrevieja. Alicante. España
| | - Nancy Vicente-Alcalde
- Departamento de Enfermería y Fisioterapia; Facultad de Ciencias de la Salud; Universidad CEU-Cardenal Herrera. Elche. España
| | - Eva M Gabaldón-Bravo
- Departamento de Enfermería; Facultad de Ciencias de la Salud; Universidad de Alicante. Alicante. España
| | | | - Emilia Montagud
- Servicio de Farmacia de Atención Primaria; Departamento de Salud de Torrevieja. Alicante. España
| | - Cecilia M Egoavil
- Hospital General Universitario de Alicante; Unidad de Farmacología Clínica. Alicante. España
- Instituto de Investigación Sanitaria y Biomédica de Alicante (ISABIAL). Alicante. España
| | | | - Pablo Caballero
- Departamento de Enfermería Comunitaria, Medicina Preventiva y Salud Pública e historia de la ciencia; Universidad de Alicante. Alicante. España
| | - José Tuells
- Instituto de Investigación Sanitaria y Biomédica de Alicante (ISABIAL). Alicante. España
- Departamento de Enfermería Comunitaria, Medicina Preventiva y Salud Pública e historia de la ciencia; Universidad de Alicante. Alicante. España
| |
Collapse
|
2
|
Huang Q, Yang H, Wang W, Zhang Y. Multi-target photothermal immunochromatography for simultaneous detection of three mycotoxins in foods. Anal Chim Acta 2023; 1279:341784. [PMID: 37827634 DOI: 10.1016/j.aca.2023.341784] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2023] [Revised: 09/03/2023] [Accepted: 09/04/2023] [Indexed: 10/14/2023]
Abstract
BACKGROUND Mycotoxin contaminated food poses a threat to human health. On-site detection of mycotoxin contamination is of significance to reduce the agricultural and food industries loss. Lateral flow immunochromatography (LFIC) as on-site detection method for mycotoxins has the advantages of low cost, easy to operate and short time-consuming. Of the various types of LFIC, photothermal LFIC possesses better sensitivity and stronger quantitative capability, but is unable to conduct synchronous multi-target analysis because that the laser can only activate one test area at a time. It was clear that a synchronous multi-target photothermal LFIC method was needed. RESULTS In this study, a photothermal LFIC method for the simultaneous detection of three mycotoxins, deoxynivalenol (DON), aflatoxin B1 (AFB1) and zearalenone (ZEN), was developed. We broadened the laser source with a beam expander and realized the irradiation and activation of three test zones simultaneously. In addition, the competitive photothermal LFIC was constructed by using Cu2-xSe-Au nanocomposites with excellent photothermal properties (η = 87.47%) as photothermal signal probes and thermal imager as photothermal signal collector. Under optimized experimental conditions, the limits of detection (LOD) were 73 ng L-1, 45 ng L-1 and 43 ng L-1 for DON, AFB1 and ZEN, respectively. The method had good linearity in three orders of magnitude and good specificity. The recoveries of the three mycotoxins in oat, cornmeal and millet samples ranged from 78.6% to 112.4%. SIGNIFICANCE Compared with previous studies, this method improved the sensitivity, broadened the linear range of detection without large equipment and realized synchronous multi-target analysis for DON, AFB1 and ZEN. We addressed a key limitation of photothermal LFIC by a simple way, facilitating the application of this technique in multi-target on-site detection in wider fields.
Collapse
Affiliation(s)
- Qing Huang
- State Key Laboratory of Food Science and Resources, Jiangnan University, Wuxi, 214122, China; International Joint Laboratory on Food Safety, Institute of Analytical Food Safety, School of Food Science and Technology, Jiangnan University, Wuxi, 214122, Jiangsu, China
| | - Hanjie Yang
- State Key Laboratory of Food Science and Resources, Jiangnan University, Wuxi, 214122, China; International Joint Laboratory on Food Safety, Institute of Analytical Food Safety, School of Food Science and Technology, Jiangnan University, Wuxi, 214122, Jiangsu, China
| | - Wenlong Wang
- State Key Laboratory of Food Science and Resources, Jiangnan University, Wuxi, 214122, China; International Joint Laboratory on Food Safety, Institute of Analytical Food Safety, School of Food Science and Technology, Jiangnan University, Wuxi, 214122, Jiangsu, China
| | - Yi Zhang
- State Key Laboratory of Food Science and Resources, Jiangnan University, Wuxi, 214122, China; International Joint Laboratory on Food Safety, Institute of Analytical Food Safety, School of Food Science and Technology, Jiangnan University, Wuxi, 214122, Jiangsu, China.
| |
Collapse
|
3
|
Nishimura K, Kitazawa H, Kawahata T, Yuhara K, Masuya T, Kuroita T, Waki K, Koike S, Isobe M, Kurosawa N. The development of a highly sensitive and quantitative SARS-CoV-2 rapid antigen test applying newly developed monoclonal antibodies to an automated chemiluminescent flow-through membrane immunoassay device. BMC Immunol 2023; 24:34. [PMID: 37752417 PMCID: PMC10523765 DOI: 10.1186/s12865-023-00567-y] [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] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2023] [Accepted: 09/05/2023] [Indexed: 09/28/2023] Open
Abstract
BACKGROUND Rapid and accurate diagnosis of individuals with SARS-CoV-2 infection is an effective way to prevent and control the spread of COVID-19. Although the detection of SARS-CoV-2 viral RNA by RT-qPCR is the gold standard for COVID-19 testing, the use of antigen-detecting rapid diagnostic tests (Ag-RDTs) is emerging as a complementary surveillance tool as Omicron case numbers skyrocket worldwide. However, the results from Ag-RDTs are less accurate in individuals with low viral loads. RESULTS To develop a highly sensitive and accurate Ag-RDT, 90 monoclonal antibodies were raised from guinea pigs immunized with SARS CoV-2 nucleocapsid protein (CoV-2-NP). By applying a capture antibody recognizing the structural epitope of the N-terminal domain of CoV-2-NP and a detection antibody recognizing the C-terminal tail of CoV-2-NP to an automated chemiluminescence flow-through membrane immunoassay device, we developed a novel Ag-RDT, CoV-2-POCube. The CoV-2-POCube exclusively recognizes CoV-2-NP variants but not the nucleocapsid proteins of other human coronaviruses. The CoV-2-POCube achieved a limit of detection sensitivity of 0.20 ~ 0.66 pg/mL of CoV-2-NPs, demonstrating more than 100 times greater sensitivity than commercially available SARS-CoV-2 Ag-RDTs. CONCLUSIONS CoV-2-POCube has high analytical sensitivity and can detect SARS-CoV-2 variants in 15 min without observing the high-dose hook effect, thus meeting the need for early SARS-CoV-2 diagnosis with lower viral load. CoV-2-POCube is a promising alternative to currently available diagnostic devices for faster clinical decision making in individuals with suspected COVID-19 in resource-limited settings.
Collapse
Affiliation(s)
- Kengo Nishimura
- Bio-Science & Medical Research Unit, Corporate Research Center, TOYOBO CO., LTD., 2-1-1 Katata, Otsu-Shi, Shiga, 520-0243, Japan
| | - Hiroaki Kitazawa
- Biotechnology Research Laboratory, TOYOBO CO., LTD., 10-24, Toyo-Cho, Tsuruga-Shi, Fukui, 914-8550, Japan
| | - Takashi Kawahata
- Biotechnology Research Laboratory, TOYOBO CO., LTD., 10-24, Toyo-Cho, Tsuruga-Shi, Fukui, 914-8550, Japan
| | - Kosuke Yuhara
- Biotechnology Research Laboratory, TOYOBO CO., LTD., 10-24, Toyo-Cho, Tsuruga-Shi, Fukui, 914-8550, Japan
| | - Takahiro Masuya
- Biotechnology Research Laboratory, TOYOBO CO., LTD., 10-24, Toyo-Cho, Tsuruga-Shi, Fukui, 914-8550, Japan
| | - Toshihiro Kuroita
- Biotechnology Operating Department, TOYOBO CO., LTD., 1-13-1 Umeda, Kita-Ku, Osaka, 530-0001, Japan
| | - Kentarou Waki
- Laboratory of Molecular and Cellular Biology, Graduate School of Science and Engineering for Education, University of Toyama, Toyama-Shi, Gofuku, Toyama, 930-8555, Japan
| | - Seiichi Koike
- Laboratory of Molecular and Cellular Biology, Graduate School of Innovative Life Science, University of Toyama, 3190 Gofuku, Toyama-Shi, Toyama, 930-8555, Japan
| | - Masaharu Isobe
- Laboratory of Molecular and Cellular Biology, Graduate School of Innovative Life Science, University of Toyama, 3190 Gofuku, Toyama-Shi, Toyama, 930-8555, Japan
| | - Nobuyuki Kurosawa
- Laboratory of Molecular and Cellular Biology, Graduate School of Innovative Life Science, University of Toyama, 3190 Gofuku, Toyama-Shi, Toyama, 930-8555, Japan.
| |
Collapse
|
4
|
Sukumaran A, Thomas T, Thomas R, Thomas RE, Paul JK, Vasudevan DM. Development and Troubleshooting in Lateral Flow Immunochromatography Assays. Indian J Clin Biochem 2021; 36:208-212. [PMID: 33867712 DOI: 10.1007/s12291-020-00887-5] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2020] [Accepted: 04/08/2020] [Indexed: 11/25/2022]
Abstract
The development of Lateral Flow Immunochromatography Assay can be divided into two levels; standardizing membrane characteristics and optimizing molecular level immunoassay reaction between analyte and detector molecules. In the preliminary phase the reaction specificity of capture and detector antibodies with the analyte has to be checked with other techniques like ELISA. Molarity and pH of conjugation buffer have prime importance in the immunoreaction among analyte and antibodies. Epitope mapping of the capture and detector antibodies is also recommended to confirm the specificity of the assay. Standardization of membrane characteristics directly relates to the sensitivity of the assay through its porosity, hydrophobicity, protein holding/releasing capacity and wicking rate. Under optimised condition a perfect Lateral Flow Immunochromatography Assay should have high on-rate (target binding efficiency), low off-rate (target releasing efficiency) and low Cross-reactivity. In this manuscript, we share our experience, especially on developmental strategies and troubleshooting, that we have experienced during Lateral Flow Immunochromatography Assay kit development.
Collapse
Affiliation(s)
| | - Thushara Thomas
- R&D Reagent Department, Agappe Diagnostics Limited, Cochin, Kerala India
| | - Riji Thomas
- R&D Reagent Department, Agappe Diagnostics Limited, Cochin, Kerala India
| | | | - Jofy K Paul
- R&D Reagent Department, Agappe Diagnostics Limited, Cochin, Kerala India
| | - D M Vasudevan
- R&D Reagent Department, Agappe Diagnostics Limited, Cochin, Kerala India
| |
Collapse
|
5
|
Torres I, Albert E, Giménez E, Olea B, Valdivia A, Pascual T, Huntley D, Sánchez D, Costa RM, Pinto C, Oltra R, Colomina J, Navarro D. Performance of a MALDI-TOF mass spectrometry-based method for rapid detection of third-generation oxymino-cephalosporin-resistant Escherichia coli and Klebsiella spp. from blood cultures. Eur J Clin Microbiol Infect Dis 2021; 40:1925-1932. [PMID: 33876385 DOI: 10.1007/s10096-021-04251-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2021] [Accepted: 04/11/2021] [Indexed: 10/21/2022]
Abstract
We optimized and prospectively evaluated a simple MALDI-TOF MS-based method for direct detection of third-generation oxymino-cephalosporin resistance (3rd CephR) in Escherichia coli and Klebsiella spp. from blood cultures (BC). In addition, we assessed the performance of a lateral flow immunochromatographic assay (LFIC) for detecting extended-spectrum β-lactamases (ESBL) (NG-Test CTX-M MULTI assay) using bacterial pellets from BC. A total of 168 BCs from unique patients were included. A pre-established volume of BC flagged as positive was transferred in brain heart infusion with or without ceftriaxone (2 mg/ml). After 2-h incubation, intact bacterial pellets were used for MALDI-TOF MS testing. Identification of bacterial species (index score > 2) in the presence of CRO was considered marker of 3rd CephR. The LFIC assay was evaluated in 141 BC. Bacteremia episodes were caused by E. coli (n = 115) or Klebsiella spp. (n = 53). A total of 49 strains were 3rd CephR by broth microdilution, of which 41 were ESBL producers, seven expressed ESBL and OXA-48 type D carbapenemase, and one harbored a plasmid-mediated AmpC. The MALDI-TOF MS method yielded four very major errors (false susceptibility) and two major errors (false resistance). The overall sensitivity of the assay was 91.8% and the specificity 98.3%. Concordance between the LFIC assay and the MALDI-TOF MS method for detection of ESBL-mediated 3rd CephR was 100%. Both evaluated methods may prove useful for early adjustment of empirical therapy in patients with E. coli and Klebsiella spp. bloodstream infections. Whether their use has a beneficial impact on patient outcomes is currently under investigation.
Collapse
Affiliation(s)
- Ignacio Torres
- Microbiology Service, Hospital Clínico Universitario, Instituto de Investigación INCLIVA, Valencia, Spain
| | - Eliseo Albert
- Microbiology Service, Hospital Clínico Universitario, Instituto de Investigación INCLIVA, Valencia, Spain
| | - Estela Giménez
- Microbiology Service, Hospital Clínico Universitario, Instituto de Investigación INCLIVA, Valencia, Spain
| | - Beatriz Olea
- Microbiology Service, Hospital Clínico Universitario, Instituto de Investigación INCLIVA, Valencia, Spain
| | - Arantxa Valdivia
- Microbiology Service, Hospital Clínico Universitario, Instituto de Investigación INCLIVA, Valencia, Spain
| | - Tania Pascual
- Microbiology Service, Hospital Clínico Universitario, Instituto de Investigación INCLIVA, Valencia, Spain
| | - Dixie Huntley
- Microbiology Service, Hospital Clínico Universitario, Instituto de Investigación INCLIVA, Valencia, Spain
| | - David Sánchez
- Microbiology Service, Hospital Clínico Universitario, Instituto de Investigación INCLIVA, Valencia, Spain
| | - Rosa María Costa
- Microbiology Service, Hospital Clínico Universitario, Instituto de Investigación INCLIVA, Valencia, Spain
| | - Carolina Pinto
- Infectious Diseases Unit, Hospital Clínico Universitario, Instituto de Investigación INCLIVA, Valencia, Spain
| | - Rosa Oltra
- Infectious Diseases Unit, Hospital Clínico Universitario, Instituto de Investigación INCLIVA, Valencia, Spain
| | - Javier Colomina
- Microbiology Service, Hospital Clínico Universitario, Instituto de Investigación INCLIVA, Valencia, Spain
| | - David Navarro
- Microbiology Service, Hospital Clínico Universitario, Instituto de Investigación INCLIVA, Valencia, Spain. .,Department of Microbiology, School of Medicine, University of Valencia, Av. Blasco Ibáñez 17, 46010, Valencia, Spain.
| |
Collapse
|
6
|
Alonso N, Griffa N, Moyano RD, Mon ML, Colombatti Olivieri MA, Barandiaran S, Vivot MM, Fiorini G, Canal AM, Santangelo MP, Singh M, Romano MI. Development of a lateral flow immunochromatography test for the rapid detection of bovine tuberculosis. J Immunol Methods 2020; 491:112941. [PMID: 33321133 DOI: 10.1016/j.jim.2020.112941] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2020] [Revised: 12/05/2020] [Accepted: 12/08/2020] [Indexed: 12/20/2022]
Abstract
Detection of specific antibodies would be a useful test strategy for bovine tuberculosis (bTB) as a complement to the single skin test. We developed a lateral flow immunochromatography (LFIC) test for rapid bTB detection based on the use of a conjugate of gold nanoparticles with a recombinant G protein. After evaluating 3 Mycobacterium bovis (MB) antigens: ESAT-6, CFP-10 and MPB83 for the control line, we selected MPB83 given it was the most specific. The performance of the test was analyzed with 820 bovine sera, 40 sera corresponding to healthy animals, 5 sera from animals infected with Mycobacterium avium subsp. paratuberculosis (MAP) and 775 sera of animals from herds with bTB. All these sera were also submitted to a validated bTB-ELISA using whole-cell antigen from MB. From the 775 sera of animals from herds with bTB, 87 sera were positive by the bTB-ELISA, 45 were positive by LFIC and only 5 animals were positives by skin test (TST). To confirm bTB infection in the group of TST (-), bTB-ELISA (+) and LFIC (+) animals, we performed postmortem examination in 15 randomly selected animals. Macroscopically, these 15 animals had numerous small and large yellow-white granulomas, characteristic of bTB, and the infection was subsequently confirmed by PCR in these tissues with lesions (gold standard). No false positive test result was detected with the developed LFIC either with the sera from healthy animals or from animals infected with MAP demonstrating that it can be a useful technique for the rapid identification of animals infected with bTB.
Collapse
Affiliation(s)
- Natalia Alonso
- Instituto de Agrobiotecnología y Biología Molecular (IABIMO), CONICET-INTA, Buenos Aires, Argentina
| | - Natanael Griffa
- Instituto de Agrobiotecnología y Biología Molecular (IABIMO), CONICET-INTA, Buenos Aires, Argentina
| | - Roberto D Moyano
- Instituto de Agrobiotecnología y Biología Molecular (IABIMO), CONICET-INTA, Buenos Aires, Argentina.
| | - Maria L Mon
- Instituto de Agrobiotecnología y Biología Molecular (IABIMO), CONICET-INTA, Buenos Aires, Argentina
| | | | - Soledad Barandiaran
- Facultad de Veterinaria, Universidad de Buenos Aires, Buenos Aires, Argentina
| | | | | | - Ana M Canal
- Facultad de Ciencias Veterinarias, Universidad Nacional del Litoral, Argentina
| | - María P Santangelo
- Instituto de Agrobiotecnología y Biología Molecular (IABIMO), CONICET-INTA, Buenos Aires, Argentina
| | - Mahavir Singh
- LIONEX Diagnostics & Therapeutics GmbH, Braunschweig 38126, Germany
| | - María I Romano
- Instituto de Agrobiotecnología y Biología Molecular (IABIMO), CONICET-INTA, Buenos Aires, Argentina
| |
Collapse
|
7
|
Cox CR, Jensen KR, Mondesire RR, Voorhees KJ. Rapid detection of Bacillus anthracis by γ phage amplification and lateral flow immunochromatography. J Microbiol Methods 2015; 118:51-6. [PMID: 26310605 DOI: 10.1016/j.mimet.2015.08.011] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2015] [Revised: 08/12/2015] [Accepted: 08/13/2015] [Indexed: 11/18/2022]
Abstract
New, rapid point-of-need diagnostic methods for Bacillus anthracis detection can enhance civil and military responses to accidental or deliberate dispersal of anthrax as a biological weapon. Current laboratory-based methods for clinical identification of B. anthracis require 12 to 120h, and are confirmed by plaque assay using the well-characterized γ typing phage, which requires an additional minimum of 24h for bacterial culture. To reduce testing time, the natural specificity of γ phage amplification was investigated in combination with lateral flow immunochromatography (LFI) for rapid, point-of-need B. anthracis detection. Phage-based LFI detection of B. anthracis Sterne was validated over a range of bacterial and phage concentrations with optimal detection achieved in as little as 2h from the onset of amplification with a threshold sensitivity of 2.5×10(4)cfu/mL. The novel use of γ phage amplification detected with a simple, inexpensive LFI assay provides a rapid, sensitive, highly accurate, and field-deployable method for diagnostic ID of B. anthracis in a fraction of the time required by conventional techniques, and without the need for extensive laboratory culture.
Collapse
Affiliation(s)
- Christopher R Cox
- Colorado School of Mines, Department of Chemistry and Geochemistry, Golden, CO 80401, United States
| | - Kirk R Jensen
- Colorado School of Mines, Department of Chemistry and Geochemistry, Golden, CO 80401, United States
| | | | - Kent J Voorhees
- Colorado School of Mines, Department of Chemistry and Geochemistry, Golden, CO 80401, United States
| |
Collapse
|