1
|
Rodríguez Domínguez MC, Montes-de-Oca-Jiménez R, Vázquez Chagoyan JC, Pliego AB, Varela Guerrero JA, Coroas González LI, Bernabé SL. Evaluation of Equine Infectious Anemia Virus by the Indirect Enzyme-linked Immunosorbent Assay EIA-LAB as Screening Tools in Mexico. J Equine Vet Sci 2021; 98:103372. [PMID: 33663722 DOI: 10.1016/j.jevs.2021.103372] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2020] [Revised: 12/27/2020] [Accepted: 12/29/2020] [Indexed: 10/22/2022]
Abstract
Equine infectious anemia is a worldwide distributed disease that affects the Equide family. Commercial effective vaccine is not available, for that reason control of the disease depends on diagnostic tools. To improve the efficiency of the diagnostic program in Cuba, LABIOFAM Group, developed an indirect enzyme-linked immunosorbent assay (ELISA), ELISA kit, to complement the diagnostic system that currently uses the agar gel immunodiffusion (AGID) kit. The ELISA AIE-LAB Kit was evaluated in a Mexican context, compared with the gold standard test Agar gel immunodiffusion, AGID AIE-LABIOFAM, and commercial AGID kit. The analytical sensitivity was determined using serial dilutions twofold of the positive control serum to establish the range of detected antibodies in relation to the cutoff value of the plate (OD 0.300). A precision study was carried out to evaluate repeatability, intermediate precision, and reproducibility by estimating the standard deviation and coefficient of variation. The precision results were satisfactory and the values of the coefficient of variation were considered adequate to guarantee an excellent consistency of the ELISA AIE-LAB. The diagnostic performance of the ELISA AIE-LAB involved the evaluation of specificity, sensitivity, and concordance in comparison with both AGID tests. The diagnostic sensitivity was 100% and the specificity 97.6%, with a very good degree of concordance (Kappa = 0.9). The results suggest that the ELISA AIE-LAB test could be used in Mexico as a diagnostic system for the detection of specific antibodies against the equine infectious anemia virus, as per current international norms.
Collapse
Affiliation(s)
| | | | | | - Alberto Barbabosa Pliego
- Faculty of Veterinary Medicine and Zootechnics, Autonomy University of the State of Mexico, Toluca, Mexico
| | | | | | - Salvador Lagunas Bernabé
- Faculty of Veterinary Medicine and Zootechnics, Autonomy University of the State of Mexico, Toluca, Mexico; Research and Advanced Studies in Animal Health Center, Animal Health Diagnosis Department, Serology Laboratory, Toluca, Mexico
| |
Collapse
|
3
|
Nardini R, Autorino GL, Issel CJ, Cook RF, Ricci I, Frontoso R, Rosone F, Scicluna MT. Evaluation of six serological ELISA kits available in Italy as screening tests for equine infectious anaemia surveillance. BMC Vet Res 2017; 13:105. [PMID: 28410613 PMCID: PMC5391595 DOI: 10.1186/s12917-017-1007-6] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2016] [Accepted: 03/28/2017] [Indexed: 11/17/2022] Open
Abstract
Background ELISAs are known to have a higher diagnostic sensitivity than the agar gel immunodiffusion (AGID) when employed for serological diagnosis of equine infectious anaemia (EIA). For this purpose, an “in-house” and five commercial ELISAs available in Italy were assessed by the National Reference Centre for EIA for their analytic specificity (Sp); precocity, defined as capability of detecting first antibodies produced during a new infection; precision based on repeatability and reproducibility, estimated from the coefficient of variation (CV); accuracy, estimated from multiple K and relative Sp and sensitivity (Se). Two serum panels, positive for non-equine retroviruses and the most frequent equine viruses, were employed to measure analytic Sp. ELISA precocity was also compared to that of one “in-house” and three commercial AGID kits, employing a panel of sera, collected weekly from horses infected with modified EIA viruses. Precision and accuracy were defined using results of a panel containing positive and negative sera examined in an inter-laboratory trial with the participation of the ten Official Laboratories. Furthermore, a questionnaire was used to assess the appropriateness of each kit for routine use. Results Analytic Sp was 100%, while the 75th percentile of CVs for positive sera varied from 0.4% to 12.73% for repeatability and from 1.6% to 44.87% for reproducibility. Although CV of the negative serum was constantly high, its outcome was unaltered. Relative Se ranged from 98.2% to 100%, relative Sp was constantly 100% and multiple K ranged from 0.95 to 1. Precocity differed among the assays: three kits detected 4.8% and 42.9% positive samples on 21 days post infection (dpi), all assays detected positive samples on 28 dpi, between 47.6% and 95.2%. Precocity of ELISAs was superior to that of the AGIDs except for two assays. In view of the feedback obtained from the questionnaires, all kits were considered appropriate for routine use. Conclusion All ELISAs having high Se and precocity are preferable as a screening test in EIA surveillance programmes to the AGID tests examined. These two tests can be incorporated in a serial diagnostic pathway to improve the efficacy of a surveillance plan.
Collapse
Affiliation(s)
- Roberto Nardini
- Istituto Zooprofilattico Sperimentale del Lazio e della Toscana "M. Aleandri", Via Appia Nuova 1411, 00178, Rome, Italy
| | - Gian Luca Autorino
- Istituto Zooprofilattico Sperimentale del Lazio e della Toscana "M. Aleandri", Via Appia Nuova 1411, 00178, Rome, Italy
| | - Charles J Issel
- Department of Veterinary Science, Gluck Equine Research Center, University of Kentucky, Lexington, KY, USA
| | - R Frank Cook
- Department of Veterinary Science, Gluck Equine Research Center, University of Kentucky, Lexington, KY, USA
| | - Ida Ricci
- Istituto Zooprofilattico Sperimentale del Lazio e della Toscana "M. Aleandri", Via Appia Nuova 1411, 00178, Rome, Italy
| | - Raffaele Frontoso
- Istituto Zooprofilattico Sperimentale del Lazio e della Toscana "M. Aleandri", Via Appia Nuova 1411, 00178, Rome, Italy
| | - Francesca Rosone
- Istituto Zooprofilattico Sperimentale del Lazio e della Toscana "M. Aleandri", Via Appia Nuova 1411, 00178, Rome, Italy
| | - Maria Teresa Scicluna
- Istituto Zooprofilattico Sperimentale del Lazio e della Toscana "M. Aleandri", Via Appia Nuova 1411, 00178, Rome, Italy.
| |
Collapse
|
5
|
Nardini R, Autorino GL, Ricci I, Frontoso R, Rosone F, Simula M, Scicluna MT. Validation according to OIE criteria of a monoclonal, recombinant p26–based, serologic competitive enzyme-linked immunosorbent assay as screening method in surveillance programs for the detection of Equine infectious anemia virus antibodies. J Vet Diagn Invest 2016; 28:88-97. [DOI: 10.1177/1040638715625092] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
The Italian National Reference Center for equine infectious anemia (CRAIE; Rome, Italy) developed and validated a monoclonal, recombinant p26–based competitive enzyme-linked immunosorbent assay (cELISA) for the detection of EIA virus antibodies employing the 2010 criteria of the World Organization for Animal Health (OIE). The following parameters were evaluated: cutoff values, repeatability, reproducibility, concordance, analytical sensitivity (Se), absolute analytical specificity (Sp), and diagnostic Se and Sp. Positive and negative predictive values were also defined in relation to the estimated prevalence. When the cELISA was used as a screening test for 96,468 samples in the Italian EIA surveillance program, 17% more EIA cases were detected than by the agar gel immunodiffusion test, and the apparent diagnostic Sp estimated from these samples was 99.8%, which was more than the diagnostic Sp (80.2%) estimated from validation. The high Se and Sp of the cELISA confirm its fit for purpose as a screening test.
Collapse
Affiliation(s)
- Roberto Nardini
- Istituto Zooprofilattico Sperimentale del Lazio e della Toscana “M. Aleandri”, Rome, Italy
| | - Gian Luca Autorino
- Istituto Zooprofilattico Sperimentale del Lazio e della Toscana “M. Aleandri”, Rome, Italy
| | - Ida Ricci
- Istituto Zooprofilattico Sperimentale del Lazio e della Toscana “M. Aleandri”, Rome, Italy
| | - Raffaele Frontoso
- Istituto Zooprofilattico Sperimentale del Lazio e della Toscana “M. Aleandri”, Rome, Italy
| | - Francesca Rosone
- Istituto Zooprofilattico Sperimentale del Lazio e della Toscana “M. Aleandri”, Rome, Italy
| | - Massimiliano Simula
- Istituto Zooprofilattico Sperimentale del Lazio e della Toscana “M. Aleandri”, Rome, Italy
| | - Maria Teresa Scicluna
- Istituto Zooprofilattico Sperimentale del Lazio e della Toscana “M. Aleandri”, Rome, Italy
| |
Collapse
|
6
|
Pfahl K, Chung C, Singleton MD, Shuck KM, Go YY, Zhang J, Campos J, Adams E, Adams DS, Timoney PJ, Balasuriya UBR. Further evaluation and validation of a commercially available competitive ELISA (cELISA) for the detection of antibodies specific to equine arteritis virus (EAV). Vet Rec 2016; 178:95. [DOI: 10.1136/vr.103362] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/30/2015] [Indexed: 11/03/2022]
Affiliation(s)
- K. Pfahl
- Maxwell H. Gluck Equine Research; Department of Veterinary Science; University of Kentucky; Lexington KY 40512 USA
- University of Kentucky Veterinary Diagnostic Laboratory; Lexington KY 40512 USA
| | - C. Chung
- VMRD (Veterinary Medical Research and Development) Inc.; Pullman WA 99163 USA
| | - M. D. Singleton
- Department of Biostatistics; University of Kentucky; Lexington KY 40512 USA
| | - K. M. Shuck
- Maxwell H. Gluck Equine Research; Department of Veterinary Science; University of Kentucky; Lexington KY 40512 USA
| | - Y. Y. Go
- Maxwell H. Gluck Equine Research; Department of Veterinary Science; University of Kentucky; Lexington KY 40512 USA
- Virus Research and Testing Group; Division of Drug Discovery Research; Korea Research Institute of Chemical Technology; Daejeon Korea
| | - J. Zhang
- Maxwell H. Gluck Equine Research; Department of Veterinary Science; University of Kentucky; Lexington KY 40512 USA
- Department of Veterinary Diagnostic and Production Animal Medicine; College of Veterinary Medicine, Iowa State University; 1600 South 16th St Ames IA 50011 USA
| | - J. Campos
- Maxwell H. Gluck Equine Research; Department of Veterinary Science; University of Kentucky; Lexington KY 40512 USA
| | - E. Adams
- VMRD (Veterinary Medical Research and Development) Inc.; Pullman WA 99163 USA
| | - D. S. Adams
- VMRD (Veterinary Medical Research and Development) Inc.; Pullman WA 99163 USA
| | - P. J. Timoney
- Maxwell H. Gluck Equine Research; Department of Veterinary Science; University of Kentucky; Lexington KY 40512 USA
| | - U. B. R. Balasuriya
- Maxwell H. Gluck Equine Research; Department of Veterinary Science; University of Kentucky; Lexington KY 40512 USA
| |
Collapse
|
7
|
Chung CJ, Grimm AL, Wilson CL, Balasuriya UBR, Chung G, Timoney PJ, Bandaranayaka-Mudiyanselage CB, Lee SS, McGuire TC. Enhanced sensitivity of an antibody competitive blocking enzyme-linked immunosorbent assay using Equine arteritis virus purified by anion-exchange membrane chromatography. J Vet Diagn Invest 2015; 27:728-38. [PMID: 26462762 DOI: 10.1177/1040638715606487] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
In an effort to improve a competitive blocking enzyme-linked immunosorbent assay (cELISA) for antibody detection to Equine arteritis virus (EAV), antigen purified by anion-exchange membrane chromatography capsule (AEC) was evaluated. Virus purification by the AEC method was rapid and easily scalable. A comparison was made between virus purified by the AEC method with that obtained by differential centrifugation based on the following: 1) the relative purity and quality of EAV glycoprotein 5 (GP5) containing the epitope defined by monoclonal antibody 17B7, and 2) the relative sensitivity of a commercial antibody cELISA with the only change being the 2 purified antigens. On evaluation by Western blot using GP5-specific monoclonal antibody 17B7, the AEC-purified EAV contained 86% GP5 monomer whereas the differentially centrifuged EAV contained <29% of the monomer. Improvement of analytical sensitivity without sacrifice of analytical specificity was clearly evident when cELISAs prepared with EAV antigen by each purification method were evaluated using 7 sensitivity and specificity check sets. Furthermore, the AEC-purified EAV-based cELISA had 30-40% higher agreement with the virus neutralization (VN) test than the cELISA prepared with differentially centrifuged EAV based on testing 40 borderline EAV-seropositive samples as defined by the VN test. In addition, the AEC-purified cELISA had highly significant (P = 0.001) robustness indicated by intra-laboratory repeatability and interlaboratory reproducibility when evaluated with the sensitivity check sets. Thus, use of AEC-purified EAV in the cELISA should lead to closer harmonization of the cELISA with the World Organization for Animal Health-prescribed VN test.
Collapse
Affiliation(s)
- Chungwon J Chung
- VMRD Inc., Pullman, WA (Chung, Grimm, Wilson, Chung, Bandaranayaka-Mudiyanselage, McGuire)Maxwell H. Gluck Equine Research Center, University of Kentucky, Lexington, KY (Balasuriya, Timoney)University of Idaho, Moscow, ID (Lee)
| | - Amanda L Grimm
- VMRD Inc., Pullman, WA (Chung, Grimm, Wilson, Chung, Bandaranayaka-Mudiyanselage, McGuire)Maxwell H. Gluck Equine Research Center, University of Kentucky, Lexington, KY (Balasuriya, Timoney)University of Idaho, Moscow, ID (Lee)
| | - Carey L Wilson
- VMRD Inc., Pullman, WA (Chung, Grimm, Wilson, Chung, Bandaranayaka-Mudiyanselage, McGuire)Maxwell H. Gluck Equine Research Center, University of Kentucky, Lexington, KY (Balasuriya, Timoney)University of Idaho, Moscow, ID (Lee)
| | - Udeni B R Balasuriya
- VMRD Inc., Pullman, WA (Chung, Grimm, Wilson, Chung, Bandaranayaka-Mudiyanselage, McGuire)Maxwell H. Gluck Equine Research Center, University of Kentucky, Lexington, KY (Balasuriya, Timoney)University of Idaho, Moscow, ID (Lee)
| | - Grace Chung
- VMRD Inc., Pullman, WA (Chung, Grimm, Wilson, Chung, Bandaranayaka-Mudiyanselage, McGuire)Maxwell H. Gluck Equine Research Center, University of Kentucky, Lexington, KY (Balasuriya, Timoney)University of Idaho, Moscow, ID (Lee)
| | - Peter J Timoney
- VMRD Inc., Pullman, WA (Chung, Grimm, Wilson, Chung, Bandaranayaka-Mudiyanselage, McGuire)Maxwell H. Gluck Equine Research Center, University of Kentucky, Lexington, KY (Balasuriya, Timoney)University of Idaho, Moscow, ID (Lee)
| | - Chandima-Bandara Bandaranayaka-Mudiyanselage
- VMRD Inc., Pullman, WA (Chung, Grimm, Wilson, Chung, Bandaranayaka-Mudiyanselage, McGuire)Maxwell H. Gluck Equine Research Center, University of Kentucky, Lexington, KY (Balasuriya, Timoney)University of Idaho, Moscow, ID (Lee)
| | - Stephen S Lee
- VMRD Inc., Pullman, WA (Chung, Grimm, Wilson, Chung, Bandaranayaka-Mudiyanselage, McGuire)Maxwell H. Gluck Equine Research Center, University of Kentucky, Lexington, KY (Balasuriya, Timoney)University of Idaho, Moscow, ID (Lee)
| | - Travis C McGuire
- VMRD Inc., Pullman, WA (Chung, Grimm, Wilson, Chung, Bandaranayaka-Mudiyanselage, McGuire)Maxwell H. Gluck Equine Research Center, University of Kentucky, Lexington, KY (Balasuriya, Timoney)University of Idaho, Moscow, ID (Lee)
| |
Collapse
|