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Sevinc F, Zhou M, Cao S, Ceylan O, Ulucesme MC, Ozubek S, Aktas M, Xuan X. Babesia ovis secreted antigen-1 is a diagnostic marker during the active Babesia ovis infections in sheep. Front Cell Infect Microbiol 2023; 13:1238369. [PMID: 37662014 PMCID: PMC10468981 DOI: 10.3389/fcimb.2023.1238369] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2023] [Accepted: 07/24/2023] [Indexed: 09/05/2023] Open
Abstract
Ovine babesiosis caused by Babesia ovis is an economically significant disease. Recently, a few B. ovis-specific proteins, including recombinant B. ovis secreted antigen-1 (rBoSA1), have been identified. Immunological analyses revealed that rBoSA1 resides within the cytoplasm of infected erythrocytes and exhibits robust antigenic properties for detecting anti-B. ovis antibodies. This protein is released into the bloodstream during the parasite's development. It would be possible to diagnose active infections by detecting this secretory protein. For this purpose, a rBoSA1-specific polyclonal antibody-based sandwich ELISA was optimized in this study. Blood samples taken from the naturally (n: 100) and experimentally (n: 15) infected sheep were analyzed for the presence of native BoSA1. The results showed that native BoSA1 was detectable in 98% of naturally infected animals. There was a positive correlation between parasitemia level in microscopy and protein density in sandwich ELISA. Experimentally infected animals showed positive reactions from the first or second day of inoculations. However, experimental infections carried out by Rhipicephalus bursa ticks revealed the native BoSA1 was detectable from the 7th day of tick attachment when the parasite began to be seen microscopically. Sandwich ELISA was sensitive enough to detect rBoSA1 protein at a 1.52 ng/ml concentration. Additionally, no serological cross-reactivity was observed between animals infected with various piroplasm species, including Babesia bovis, B. bigemina, B. caballi, B. canis, B. gibsoni, Theileria equi, and T. annulata. Taken collectively, the findings show that the rBoSA1-specific polyclonal antibody-based sandwich ELISA can be successfully used to diagnose clinical B. ovis infections in sheep at the early stage.
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Affiliation(s)
- Ferda Sevinc
- Department of Parasitology, Faculty of Veterinary Medicine, University of Selcuk, Konya, Türkiye
| | - Mo Zhou
- Jiangsu Key Laboratory for High-tech Research and Development of Veterinary Biopharmaceuticals, Jiangsu Agri-animal Husbandry Vocational College, Taizhou, China
| | - Shinuo Cao
- Engineering Technology Research Center for Modern Animal Science and Novel Veterinary Pharmaceutic Development, Jiangsu Agri-animal Husbandry Vocational College, Taizhou, China
| | - Onur Ceylan
- Department of Parasitology, Faculty of Veterinary Medicine, University of Selcuk, Konya, Türkiye
| | - Mehmet Can Ulucesme
- Department of Parasitology, Faculty of Veterinary Medicine, University of Firat, Elazig, Türkiye
| | - Sezayi Ozubek
- Department of Parasitology, Faculty of Veterinary Medicine, University of Firat, Elazig, Türkiye
| | - Munir Aktas
- Department of Parasitology, Faculty of Veterinary Medicine, University of Firat, Elazig, Türkiye
| | - Xuenan Xuan
- National Research Center for Protozoan Diseases, Obihiro University of Agriculture and Veterinary Medicine, Obihiro, Japan
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A prime-boost combination of a three-protein cocktail and multiepitopic MVA as a vaccine against Babesia bigemina elicits neutralizing antibodies and a Th1 cellular immune response in mice. Ticks Tick Borne Dis 2022; 13:101991. [DOI: 10.1016/j.ttbdis.2022.101991] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2021] [Revised: 06/09/2022] [Accepted: 06/10/2022] [Indexed: 11/23/2022]
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Lira-Amaya JJ, Martínez-García G, Santamaria-Espinosa RM, Castañeda-Arriola RO, Ojeda-Carrasco JJ, Ávila-Ramírez G, Figueroa-Millán JV. Comparative Study of Indirect Fluorescent Antibody, ELISA, and Immunochromatography Tests for Serological Diagnosis of Bovine Babesiosis Caused by Babesia bovis. Animals (Basel) 2021; 11:ani11123358. [PMID: 34944137 PMCID: PMC8698033 DOI: 10.3390/ani11123358] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2021] [Revised: 11/20/2021] [Accepted: 11/22/2021] [Indexed: 11/16/2022] Open
Abstract
Simple Summary Currently serological diagnosis of bovine babesiosis is based on the detection of Babesia-specific antibodies (immunoglobulin-G). Antibody detection is commonly used in seroepidemiological studies or in the assessment of antibabesial antibody titers after cattle vaccination. The indirect fluorescent antibody test (IFAT) and enzyme-linked immunosorbent assay (ELISA) are the most widely used diagnostic tests, although there their implementation has some drawbacks, principally due to the requirements for trained personnel, specific materials, and special laboratory equipment. This study compared a newly designed rapid immunochromatography test (ICT), which has been reported recently and used for Babesia bovis-specific antibody detection with promising results, with an in-house ELISA for the serological diagnosis of cattle exposed to B. bovis (Babesia bovis) in Mexico. Higher sensitivity and specificity values were found by ICT, proving its effectiveness over ELISA. ICT also had better concordance than ELISA when IFAT was used as the “gold standard”. The rapid ICT was shown to have diagnostic utility for the detection of antibodies against B. bovis and could be used as a field test in Mexico due to its practicality, as it does not need laboratory equipment for implementation and interpretation of results. Abstract The indirect fluorescent antibody test (IFAT) is the most frequently used test to conduct seroepidemiological studies so far, and it is regarded as the "gold standard" test for the serological diagnosis of bovine babesiosis. The aim of the present study was to compare the enzyme-linked immunosorbent assay (ELISA) and the rapid immunochromatography test (ICT) for use in the serological diagnosis of cattle exposed to B. bovis in Mexico. The evaluation of test performance was carried out with 30 positive and 30 negative reference sera. A total of 72 bovine sera samples collected from cattle in a region with endemic bovine babesiosis were analyzed by ELISA and ICT, and the results were compared with those of IFAT. Kappa value (k) was also calculated to determine the agreement between tests. The sensitivity and specificity of ELISA for detecting antibodies against B. bovis were 87% (26/30) and 80% (24/30), respectively. The sensitivity and specificity of ICT for detecting antibodies against B. bovis were 90% (27/30) and 83.3% (25/30), respectively. The overall concordance determined for ELISA and ICT was 94.4% (68/72) and 98.6% (71/72), respectively, when the results were compared with those of IFAT. ICT was more sensitive and specific in this comparative study, showing good strength of agreement (k = 0.79) with respect to IFAT. ICT combines a strip-based assay system that is fast, practical, and sensitive for detection of antibodies to B. bovis, which suggests that it could be applied in the field without requiring any laboratory equipment for its use and interpretation of test results.
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Affiliation(s)
- José Juan Lira-Amaya
- Babesia Laboratory Unit, CENID-Salud Animal e Inocuidad, INIFAP, Carr. Fed. Cuernavaca-Cuautla No. 8534, Col. Progreso, Jiutepec 62550, Mexico; (J.J.L.-A.); (G.M.-G.); (R.M.S.-E.)
| | - Grecia Martínez-García
- Babesia Laboratory Unit, CENID-Salud Animal e Inocuidad, INIFAP, Carr. Fed. Cuernavaca-Cuautla No. 8534, Col. Progreso, Jiutepec 62550, Mexico; (J.J.L.-A.); (G.M.-G.); (R.M.S.-E.)
| | - R. Montserrat Santamaria-Espinosa
- Babesia Laboratory Unit, CENID-Salud Animal e Inocuidad, INIFAP, Carr. Fed. Cuernavaca-Cuautla No. 8534, Col. Progreso, Jiutepec 62550, Mexico; (J.J.L.-A.); (G.M.-G.); (R.M.S.-E.)
| | - Roberto O. Castañeda-Arriola
- La Posta Experimental Field, INIFAP, Carr. Fed. Veracruz-Cordoba Km. 22.5, Paso del Toro, Medellin 94277, Mexico;
| | - Juan J. Ojeda-Carrasco
- UAEM University Center Amecameca, Autonomous University Mexico State, Carr. Amecameca-Ayapango Km. 2.5, Amecameca 56900, Mexico;
| | - Guillermina Ávila-Ramírez
- Faculty of Medicine, National Autonomous University of Mexico, Circuito Escolar 411A, Copilco Universidad, Ciudad de México 04510, Mexico;
| | - Julio V. Figueroa-Millán
- Babesia Laboratory Unit, CENID-Salud Animal e Inocuidad, INIFAP, Carr. Fed. Cuernavaca-Cuautla No. 8534, Col. Progreso, Jiutepec 62550, Mexico; (J.J.L.-A.); (G.M.-G.); (R.M.S.-E.)
- Correspondence: ; Tel.: +52-777-320-5544
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Santamaria RM, Lira JJ, Vargas P, Alvarez JA, Rojas C, Figueroa JV. Validation of an indirect ELISA using recombinant proteins as antigen to identify animals exposed to Babesia bigemina. Transbound Emerg Dis 2020; 67 Suppl 2:201-207. [PMID: 32216052 DOI: 10.1111/tbed.13522] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
The objective of this study was to instrument a serological assay for the epidemiological diagnosis of bovine babesiosis in Mexico, using the Babesia bigemina recombinant protein RAP-1 (rRAP-1α) as antigen. rRAP-1α, r12d3 and rGP45 were the three recombinant antigens initially tested. Based on the highest titres obtained in the indirect ELISA (iELISA) with the positive control serum, using similar antigen concentrations, rRAP-1α was selected for further use. The diagnostic sensitivity and specificity rates estimated for the iELISA with rRAP-1α as antigen were 89.9% and 86.5%, respectively, while for the Indirect Fluorescent Antibody Test (IFAT), the gold standard assay, the sensitivity was 86.66% and the specificity was 95%. The ĸ agreement value determined was 0.52, indicating a moderate agreement between the iELISA and IFAT assays. The instrumented iELISA with rRAP-1α as antigen shows an excellent specificity rate and an acceptable sensitivity that allows for the detection of antibodies to B. bigemina in cattle naturally exposed to the vector tick Rhipicephalus microplus. By using the iELISA-rRAP-1α, along with an iELISA with recombinant Merozoite Surface Antigen (rMSA-1) for antibody determination against Babesia bovis in the serum samples collected from cattle at 'La Posta' experimental station in Mexico, a seroprevalence of 20.3% was estimated for B. bigemina and 19.4% for B. bovis, while 36.89% of samples were positive for both Babesia species. The iELISA test promises to be a safe and low-cost type of diagnosis available to cattle producers in Mexico and would facilitate the definition of herd immunity status to implement measures of control adapted for the prevention of bovine babesiosis outbreaks.
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Affiliation(s)
| | - Jose J Lira
- CENID- Salud Animal e Inocuidad, INIFAP, Jiutepec, Mexico
| | | | | | - Carmen Rojas
- CENID- Salud Animal e Inocuidad, INIFAP, Jiutepec, Mexico
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Alvarez JA, Rojas C, Figueroa JV. Diagnostic Tools for the Identification of Babesia sp. in Persistently Infected Cattle. Pathogens 2019; 8:pathogens8030143. [PMID: 31505741 PMCID: PMC6789608 DOI: 10.3390/pathogens8030143] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2019] [Revised: 08/26/2019] [Accepted: 09/02/2019] [Indexed: 12/28/2022] Open
Abstract
Bovine babesiosis is a tick-borne disease of cattle caused by the protozoan parasites of the genus Babesia. Babesia bovis, Babesia bigemina and Babesia divergens are considered by International health authorities (OIE) as the principal species of Babesia that cause bovine babesiosis. Animals that recover from a babesial primo infection may remain as persistent carriers with no clinical signs of disease and can be the source of infection for ticks that are able to acquire Babesia parasites from infected cattle and to transmit Babesia parasites to susceptible cattle. Several procedures that have been developed for parasite detection and diagnosis of this infectious carrier state constitute the basis for this review: A brief description of the direct microscopic detection of Babesia-infected erytrocytes; PCR-based diagnostic assays, which are very sensitive particularly in detecting Babesia in carrier cattle; in-vitro culture methods, used to demonstrate presence of carrier infections of Babesia sp.; animal inoculation, particularly for B. divergens isolation are discussed. Alternatively, persistently infected animals can be tested for specific antibabesial antibodies by using indirect serological assays. Serological procedures are not necessarily consistent in identifying persistently infected animals and have the disadvantage of presenting with cross reactions between antibodies to Babesia sp.
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Affiliation(s)
- J Antonio Alvarez
- Babesia Unit, CENID-Salud Animal e Inocuidad, INIFAP, 62550 Jiutepec, Mexico.
| | - Carmen Rojas
- Babesia Unit, CENID-Salud Animal e Inocuidad, INIFAP, 62550 Jiutepec, Mexico.
| | - Julio V Figueroa
- Babesia Unit, CENID-Salud Animal e Inocuidad, INIFAP, 62550 Jiutepec, Mexico.
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Jaramillo Ortiz JM, Paoletta MS, Gravisaco MJ, López Arias LS, Montenegro VN, de la Fournière SAM, Valenzano MN, Guillemi EC, Valentini B, Echaide I, Farber MD, Wilkowsky SE. Immunisation of cattle against Babesia bovis combining a multi-epitope modified vaccinia Ankara virus and a recombinant protein induce strong Th1 cell responses but fails to trigger neutralising antibodies required for protection. Ticks Tick Borne Dis 2019; 10:101270. [PMID: 31445874 DOI: 10.1016/j.ttbdis.2019.101270] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2019] [Revised: 08/04/2019] [Accepted: 08/15/2019] [Indexed: 01/01/2023]
Abstract
Protection against the intraerythrocytic protozoan parasite Babesia bovis depends on both strong innate and adaptive immune response, this latter involving the presentation of parasite antigens to CD4+ T-lymphocytes by professional antigen-presenting cells. Secretion of Th1 cytokines by CD4+ T cell is also very important for isotype switching to IgG2, the best opsonising antibody isotype in cattle, to target extracellular parasites and parasite antigens displayed at the erythrocyte surface. In the field of vaccinology, heterologous prime-boost schemes combining protein-adjuvant formulations with a modified vaccinia Ankara vector expressing the same antigen have demonstrated the induction of both humoral and cellular immune responses. It has been previously demonstrated that MVA-infected dendritic cells can present antigens in the context of MHC II and activate CD4+ T cell. These results support the use of the MVA viral vector for a pathogen like Babesia bovis, which only resides within erythrocytes. In this study, 13-15-months-old Holstein-Friesian steers were immunised with a subunit vaccine as a prime and a modified vaccinia Ankara vector as a boost, both expressing a chimeric multi-antigen (rMABbo - rMVA). This antigen includes the immunodominant B and T cell epitopes of three B. bovis proteins: merozoite surface antigen - 2c (MSA - 2c), rhoptry associated protein 1 (RAP - 1) and heat shock protein 20 (HSP20). Responses were compared with the Babesia bovis live attenuated vaccine used in Argentina (R1A). Eleven weeks after the first immunisation, all bovines were challenged by the inoculation of a virulent B. bovis strain. All groups were monitored daily for hyperthermia and reduction of packed cell volume. Both the rMABbo - rMVA and R1A vaccinated animals developed high titters of total IgG antibodies and an antigen-specific Th1 cellular response before and after challenge. However, all rMABbo - rMVA steers showed clinical signs of disease upon challenge. Only the R1A live vaccine group developed an immune response associated with in vitro neutralising antibodies at a level that significantly inhibited the parasite invasion. The lack of protection observed with this recombinant formulation indicates the need to perform further basic and clinical studies in the bovine model in order to achieve the desired effectiveness. This is the first report in which a novel vaccine candidate against Babesia bovis was constructed based on a recombinant and rationally designed viral vector and evaluated in the biological model of the disease.
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Affiliation(s)
- José Manuel Jaramillo Ortiz
- Instituto de Agrobiotecnología y Biología Molecular (IABIMO) INTA - CONICET, De Los Reseros y Dr. Nicolás Repetto s/n, P.O. Box 25 (B1712WAA), Castelar, Buenos Aires, Argentina
| | - Martina Soledad Paoletta
- Instituto de Agrobiotecnología y Biología Molecular (IABIMO) INTA - CONICET, De Los Reseros y Dr. Nicolás Repetto s/n, P.O. Box 25 (B1712WAA), Castelar, Buenos Aires, Argentina
| | - María José Gravisaco
- Instituto de Agrobiotecnología y Biología Molecular (IABIMO) INTA - CONICET, De Los Reseros y Dr. Nicolás Repetto s/n, P.O. Box 25 (B1712WAA), Castelar, Buenos Aires, Argentina
| | - Ludmila Sol López Arias
- Instituto de Agrobiotecnología y Biología Molecular (IABIMO) INTA - CONICET, De Los Reseros y Dr. Nicolás Repetto s/n, P.O. Box 25 (B1712WAA), Castelar, Buenos Aires, Argentina
| | - Valeria Noely Montenegro
- Instituto de Agrobiotecnología y Biología Molecular (IABIMO) INTA - CONICET, De Los Reseros y Dr. Nicolás Repetto s/n, P.O. Box 25 (B1712WAA), Castelar, Buenos Aires, Argentina
| | - Sofía Ana María de la Fournière
- Instituto de Agrobiotecnología y Biología Molecular (IABIMO) INTA - CONICET, De Los Reseros y Dr. Nicolás Repetto s/n, P.O. Box 25 (B1712WAA), Castelar, Buenos Aires, Argentina
| | - Magalí Nicole Valenzano
- Instituto de Agrobiotecnología y Biología Molecular (IABIMO) INTA - CONICET, De Los Reseros y Dr. Nicolás Repetto s/n, P.O. Box 25 (B1712WAA), Castelar, Buenos Aires, Argentina
| | - Eliana Carolina Guillemi
- Instituto de Agrobiotecnología y Biología Molecular (IABIMO) INTA - CONICET, De Los Reseros y Dr. Nicolás Repetto s/n, P.O. Box 25 (B1712WAA), Castelar, Buenos Aires, Argentina
| | - Beatriz Valentini
- Laboratorio de Inmunología y Parasitología Veterinaria, EEA Rafaela, INTA, RN 34, Km 227, CC 22, 2300, Rafaela, Santa Fe, Argentina
| | - Ignacio Echaide
- Laboratorio de Inmunología y Parasitología Veterinaria, EEA Rafaela, INTA, RN 34, Km 227, CC 22, 2300, Rafaela, Santa Fe, Argentina
| | - Marisa Diana Farber
- Instituto de Agrobiotecnología y Biología Molecular (IABIMO) INTA - CONICET, De Los Reseros y Dr. Nicolás Repetto s/n, P.O. Box 25 (B1712WAA), Castelar, Buenos Aires, Argentina
| | - Silvina Elizabeth Wilkowsky
- Instituto de Agrobiotecnología y Biología Molecular (IABIMO) INTA - CONICET, De Los Reseros y Dr. Nicolás Repetto s/n, P.O. Box 25 (B1712WAA), Castelar, Buenos Aires, Argentina.
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Report from the 'One Health' 9 th Tick and Tick-Borne Pathogen Conference and the 1 st Asia-Pacific Rickettsia Conference, Cairns, Australia, 27 th August-1 st September 2017. Vet Sci 2018; 5:vetsci5040085. [PMID: 30279400 PMCID: PMC6313921 DOI: 10.3390/vetsci5040085] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2018] [Accepted: 10/01/2018] [Indexed: 11/16/2022] Open
Abstract
The 9th Tick and Tick-borne Pathogen (TTP9) Conference was held in conjunction with the first Asia Pacific Rickettsia Conference (APRC1) in Cairns, Australia from 27 August until 1 September in 2017. This MDPI Veterinary Sciences Special Issue has been dedicated to selected veterinary science articles from the conference associated with the control of animal diseases in the context of ticks and tick-borne pathogens, including Rickettsia species. The articles presented in this Special Issue include novel developments for the future control of ticks and tick-borne diseases. This editorial describes the meeting content, the plenaries, the TTP awards, the MDPI Veterinary Science Special Issue articles, and serves as a legacy report for TTP9APRC1.
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