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Sánchez-Matamoros A, Nieto-Pelegrín E, Beck C, Rivera-Arroyo B, Lecollinet S, Sailleau C, Zientara S, Sánchez-Vizcaíno JM. Development of a Luminex-Based DIVA Assay for Serological Detection of African Horse Sickness Virus in Horses. Transbound Emerg Dis 2016; 63:353-9. [DOI: 10.1111/tbed.12503] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2015] [Indexed: 11/30/2022]
Affiliation(s)
- A. Sánchez-Matamoros
- VISAVET Health Surveillance Centre; Universidad Complutense Madrid; Madrid Spain
- Animal Health Department; Universidad Complutense Madrid; Madrid Spain
- CEI Campus Moncloa; UCM-UPM; Madrid Spain
| | - E. Nieto-Pelegrín
- VISAVET Health Surveillance Centre; Universidad Complutense Madrid; Madrid Spain
- Animal Health Department; Universidad Complutense Madrid; Madrid Spain
| | - C. Beck
- Animal Health Laboratory; French Agency for Food, Environmental and Occupational Health and Safety (ANSES); UPE, UMR 1161 ANSES, INRA, ENVA; Maisons-Alfort France
| | - B. Rivera-Arroyo
- VISAVET Health Surveillance Centre; Universidad Complutense Madrid; Madrid Spain
- Animal Health Department; Universidad Complutense Madrid; Madrid Spain
| | - S. Lecollinet
- Animal Health Laboratory; French Agency for Food, Environmental and Occupational Health and Safety (ANSES); UPE, UMR 1161 ANSES, INRA, ENVA; Maisons-Alfort France
| | - C. Sailleau
- Animal Health Laboratory; French Agency for Food, Environmental and Occupational Health and Safety (ANSES); UPE, UMR 1161 ANSES, INRA, ENVA; Maisons-Alfort France
| | - S. Zientara
- Animal Health Laboratory; French Agency for Food, Environmental and Occupational Health and Safety (ANSES); UPE, UMR 1161 ANSES, INRA, ENVA; Maisons-Alfort France
| | - J. M. Sánchez-Vizcaíno
- VISAVET Health Surveillance Centre; Universidad Complutense Madrid; Madrid Spain
- Animal Health Department; Universidad Complutense Madrid; Madrid Spain
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Sánchez-Matamoros A, Beck C, Kukielka D, Lecollinet S, Blaise-Boisseau S, Garnier A, Rueda P, Zientara S, Sánchez-Vizcaíno JM. Development of a Microsphere-based Immunoassay for Serological Detection of African Horse Sickness Virus and Comparison with Other Diagnostic Techniques. Transbound Emerg Dis 2015; 63:e270-e277. [PMID: 25693720 DOI: 10.1111/tbed.12340] [Citation(s) in RCA: 9] [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: 09/17/2014] [Indexed: 11/29/2022]
Abstract
African horse sickness (AHS) is a viral disease that causes high morbidity and mortality rates in susceptible Equidae and therefore significant economic losses. More rapid, sensitive and specific assays are required by diagnostic laboratories to support effective surveillance programmes. A novel microsphere-based immunoassay (Luminex assay) in which beads are coated with recombinant AHS virus (AHSV) structural protein 7 (VP7) has been developed for serological detection of antibodies against VP7 of any AHSV serotype. The performance of this assay was compared with that of a commercial enzyme-linked immunosorbent assay (ELISA) and commercial lateral flow assay (LFA) on a large panel of serum samples from uninfected horses (n = 92), from a reference library of all AHSV serotypes (n = 9), on samples from horses experimentally infected with AHSV (n = 114), and on samples from West African horses suspected of having AHS (n = 85). The Luminex assay gave the same negative results as ELISA when used to test the samples from uninfected horses. Both assays detected antibodies to all nine AHSV serotypes. In contrast, the Luminex assay detected a higher rate of anti-VP7 positivity in the West African field samples than did ELISA or LFA. The Luminex assay detected anti-VP7 positivity in experimentally infected horses at 7 days post-infection, compared to 13 days for ELISA. This novel immunoassay provides a platform for developing multiplex assays, in which the presence of antibodies against multiple ASHV antigens can be detected simultaneously. This would be useful for serotyping or for differentiating infected from vaccinated animals.
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Affiliation(s)
- A Sánchez-Matamoros
- VISAVET Health Surveillance Centre, Universidad Complutense de Madrid, Madrid, Spain. .,Animal Health Department, Universidad Complutense de Madrid, Madrid, Spain. .,CEI Campus Moncloa, UCM-UPM, Madrid, Spain.
| | - C Beck
- French Agency for Food, Environmental and Occupational Health and Safety (ANSES), Animal Health Laboratory, UPEC, UMR 1161 INRA, ANSES, ENVA, Maisons-Alfort, France
| | - D Kukielka
- Microbiology Area, Pharmacy Faculty, San Pablo CEU University, Madrid, Spain
| | - S Lecollinet
- French Agency for Food, Environmental and Occupational Health and Safety (ANSES), Animal Health Laboratory, UPEC, UMR 1161 INRA, ANSES, ENVA, Maisons-Alfort, France
| | - S Blaise-Boisseau
- French Agency for Food, Environmental and Occupational Health and Safety (ANSES), Animal Health Laboratory, UPEC, UMR 1161 INRA, ANSES, ENVA, Maisons-Alfort, France
| | - A Garnier
- French Agency for Food, Environmental and Occupational Health and Safety (ANSES), Animal Health Laboratory, UPEC, UMR 1161 INRA, ANSES, ENVA, Maisons-Alfort, France
| | - P Rueda
- Inmunología y Genética Aplicada, S.A. (INGENASA), Madrid, Spain
| | - S Zientara
- French Agency for Food, Environmental and Occupational Health and Safety (ANSES), Animal Health Laboratory, UPEC, UMR 1161 INRA, ANSES, ENVA, Maisons-Alfort, France
| | - J M Sánchez-Vizcaíno
- VISAVET Health Surveillance Centre, Universidad Complutense de Madrid, Madrid, Spain.,Animal Health Department, Universidad Complutense de Madrid, Madrid, Spain
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Sánchez-Matamoros A, Sánchez-Vizcaíno JM, Rodríguez-Prieto V, Iglesias E, Martínez-López B. Identification of Suitable Areas for African Horse Sickness Virus Infections in Spanish Equine Populations. Transbound Emerg Dis 2014; 63:564-73. [PMID: 25476549 DOI: 10.1111/tbed.12302] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [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: 07/03/2014] [Indexed: 11/27/2022]
Abstract
African horse sickness (AHS) is one of the most important vector-borne viral infectious diseases of equines, transmitted mainly by Culicoides spp. The re-emergence of Culicoides-borne diseases in Europe, such as the recent bluetongue (BT) or Schmallenberg outbreaks, has raised concern about the potential re-introduction and further spread of AHS virus (AHSV) in Europe. Spain has one of the largest European equine populations. In addition, its geographical, environmental and entomological conditions favour AHSV infections, as shown by the historical outbreaks in the 1990s. The establishment of risk-based surveillance strategies would allow the early detection and rapid control of any potential AHSV outbreak. This study aimed to identify the areas and time periods that are suitable or at high risk for AHS occurrence in Spain using a GIS-based multicriteria decision framework. Specifically risk maps for AHS occurrence were produced using a weighted linear combination of the main risk factors of disease, namely extrinsic incubation period, equine density and distribution of competent Culicoides populations. Model results revealed that the south-western and north-central areas of Spain and the Balearic Islands are the areas at the highest risk for AHSV infections, particularly in late summer months. Conversely, Galicia, Castile and Leon and La Rioja can be considered as low-risk regions. This result was validated with historical AHS and BT outbreaks in Spain, and with the Culicoides vector distribution area. The model results, together with current Spanish equine production features, should provide the foundations to design risk-based and more cost-effective surveillance strategies for the early detection and rapid control potential of AHS outbreaks in Spain.
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Affiliation(s)
- A Sánchez-Matamoros
- VISAVET Centre and Animal Health Department, Complutense University of Madrid, Madrid, Spain.,CEI Campus Moncloa, UCM-UPM, Madrid, Spain
| | - J M Sánchez-Vizcaíno
- VISAVET Centre and Animal Health Department, Complutense University of Madrid, Madrid, Spain
| | - V Rodríguez-Prieto
- VISAVET Centre and Animal Health Department, Complutense University of Madrid, Madrid, Spain
| | - E Iglesias
- Department of Agricultural Economics, E.T.S Agronomics Engineering, Technical University of Madrid, Madrid, Spain
| | - B Martínez-López
- VISAVET Centre and Animal Health Department, Complutense University of Madrid, Madrid, Spain.,Department of Medicine and Epidemiology, Center for Animal Disease Modeling and Surveillance (CADMS), University of California, Davis, CA, USA
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Sánchez-Matamoros A, Kukielka D, De las Heras AI, Sánchez-Vizcaíno JM. Development and evaluation of a SYBR Green real-time RT-PCR assay for evaluation of cytokine gene expression in horse. Cytokine 2012; 61:50-3. [PMID: 23103121 DOI: 10.1016/j.cyto.2012.10.004] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2012] [Revised: 08/29/2012] [Accepted: 10/01/2012] [Indexed: 10/27/2022]
Abstract
Cytokine secretion is one of the main mechanisms by which the immune system is regulated in response to pathogens. Therefore, the measurement of cytokine expression is fundamental to characterizing the immune response to infections. Real-time quantitative reverse transcriptase-polymerase chain reaction (RT-qPCR) is widely used to measure cytokine mRNA levels, but assay conditions should be properly evaluated before analyzing important equine infections through relative quantification of gene expression. The aim of this study was to develop and evaluate a set of RT-qPCR assays for a panel of the most common cytokines in horses involved in innate and adaptive immune responses. Eight cytokines (interleukin (IL)-1β, IL-2, IL-4, IL-10, IL-12, TNFα, IFNβ and IFNγ) and a housekeeping gene (β-actin) were detected and amplified with the same annealing temperature in a SYBR Green RT-qPCR assay of samples of mitogen-stimulated peripheral blood mononuclear cells from a healthy horse and whole blood from a horse infected with African horse sickness virus. The method gave good efficiency for all genes tested, allowing quantification of relative expression levels. These SYBR Green RT-qPCR assays may be useful for examining cytokine gene expression in horses in response to exposure to economically important pathogens.
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Sánchez-Matamoros A, Martínez-López B, Sánchez-Vizcaíno F, Sánchez-Vizcaíno JM. Social Network Analysis of Equidae Movements and Its Application to Risk-Based Surveillance and to Control of Spread of Potential Equidae Diseases. Transbound Emerg Dis 2012; 60:448-59. [DOI: 10.1111/j.1865-1682.2012.01365.x] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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