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Rebollada-Merino A, García-Seco T, Chinchilla B, Pérez-Sancho M, Domínguez L, Rodríguez-Bertos A. Immunopathology of early and advanced epididymis lesions caused by Brucella ovis in rams. Vet Immunol Immunopathol 2023; 261:110621. [PMID: 37348444 DOI: 10.1016/j.vetimm.2023.110621] [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: 03/23/2023] [Revised: 05/30/2023] [Accepted: 06/05/2023] [Indexed: 06/24/2023]
Abstract
Ovine brucellosis is an infectious disease that causes alterations in the reproductive tract in ram and abortion in ewes. Their negative economic impact in ovine production warrants a thorough understanding the interactions between B. ovis and the host. Here, epididymis lesions of rams infected by B. ovis were histopathologically staged into early and advanced. Expression by immunohistochemistry of Brucella antigens, inflammatory cell markers (CD3, CD79αcy) and cytokines (IFN-γ, TNF-α, TGF-β1) was assessed in both stages. Early lesions were characterized by epithelial changes, interstitial inflammation, and mild fibrosis; whereas advanced lesions displayed caseous granulomas containing numerous macrophages, multinucleated giant cells, lymphocytes, and plasma cells. Expression of Brucella antigens were observed in both stages. The cellular response in B. ovis lesions were predominantly of T-cells (CD3+) whereas low numbers of B-cells and plasma cells (CD79αcy+) were present in both early and advanced lesions. IFN-γ was expressed by lymphocytes in early lesions suggesting that the adaptive immune response against B. ovis is initiated by Th1 cells, this response was also preserved in advanced stages. Expression of TNF-α was observed in neutrophils of epithelial microabscesses and intraepithelial T-cells of early lesions suggesting a promotion of neutrophil phagocytosis triggered by TNF-α. On the other hand, advanced lesions showed a reduction of TNF-α expression which may permit B. ovis persistence in granulomas. Lastly, TGF-β1 expression (fibroblast, macrophages and less in lymphocytes) were increased with time, suggesting that B. ovis promotes TGF-β1 secretion promoting chronicity of the lesions.
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Affiliation(s)
- Agustín Rebollada-Merino
- VISAVET Health Surveillance Centre, Complutense University of Madrid, 28040 Madrid, Spain; Department of Internal Medicine and Animal Surgery, Faculty of Veterinary Medicine, Complutense University of Madrid, 28040 Madrid, Spain
| | - Teresa García-Seco
- VISAVET Health Surveillance Centre, Complutense University of Madrid, 28040 Madrid, Spain
| | - Blanca Chinchilla
- VISAVET Health Surveillance Centre, Complutense University of Madrid, 28040 Madrid, Spain
| | - Marta Pérez-Sancho
- VISAVET Health Surveillance Centre, Complutense University of Madrid, 28040 Madrid, Spain; Department of Animal Health, Faculty of Veterinary Medicine, Complutense University of Madrid, 28040 Madrid, Spain
| | - Lucas Domínguez
- VISAVET Health Surveillance Centre, Complutense University of Madrid, 28040 Madrid, Spain; Department of Animal Health, Faculty of Veterinary Medicine, Complutense University of Madrid, 28040 Madrid, Spain
| | - Antonio Rodríguez-Bertos
- VISAVET Health Surveillance Centre, Complutense University of Madrid, 28040 Madrid, Spain; Department of Internal Medicine and Animal Surgery, Faculty of Veterinary Medicine, Complutense University of Madrid, 28040 Madrid, Spain.
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Maksimović Z, Jamaković A, Semren O, Rifatbegović M. Molecular detection of Brucella spp. in clinical samples of seropositive ruminants in Bosnia and Herzegovina. Comp Immunol Microbiol Infect Dis 2022; 86:101821. [PMID: 35576796 DOI: 10.1016/j.cimid.2022.101821] [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: 11/18/2021] [Revised: 05/06/2022] [Accepted: 05/09/2022] [Indexed: 10/18/2022]
Abstract
Brucellosis is one of the most common zoonotic diseases worldwide that is endemic to Bosnia and Herzegovina (B&H) and remains an emerging public and animal health concern in this country. Diagnostic testing of brucellosis in ruminants in B&H relies exclusively on serological methods. The present study was conducted to determine the presence of Brucella spp. in clinical samples of seropositive ruminants by Real-time PCR assay. Of the 135 samples tested, 37% were positive by Real-time PCR. The frequency of detection of Brucella-DNA in the samples collected from aborted animals (n = 20/20; 100%) was significantly higher (P < 0.00001) when compared to asymptomatic animals (n = 30/115; 26%). Among asymptomatic animals, 31.1% of cattle were positive for Brucella-DNA, followed by sheep (23.4%) and goats (16.6%). The results of this research underline the limitations of the current control policy and indicate the need for additional diagnostic methods required for more effective brucellosis control program.
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Affiliation(s)
- Zinka Maksimović
- Department of Microbiology and Infectious Diseases, Veterinary Faculty, University of Sarajevo, Zmaja od Bosne 90, Sarajevo 71000, Bosnia and Herzegovina
| | - Amela Jamaković
- Veterinary Institute Tuzla, Tuzlanske brigade br. 28, Tuzla 75000, Bosnia and Herzegovina
| | - Orjana Semren
- Inspection Directorate, Veterinary Inspection, Župana Želimira bb, Livno 80101, Bosnia and Herzegovina
| | - Maid Rifatbegović
- Department of Microbiology and Infectious Diseases, Veterinary Faculty, University of Sarajevo, Zmaja od Bosne 90, Sarajevo 71000, Bosnia and Herzegovina.
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3
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Zhou Z, Gu G, Luo Y, Li W, Li B, Zhao Y, Liu J, Shuai X, Wu L, Chen J, Fan C, Huang Q, Han B, Wen J, Jiao H. Immunological pathways of macrophage response to Brucella ovis infection. Innate Immun 2020; 26:635-648. [PMID: 32970502 PMCID: PMC7556187 DOI: 10.1177/1753425920958179] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023] Open
Abstract
As the molecular mechanisms of Brucella ovis pathogenicity are not completely clear, we have applied a transcriptome approach to identify the differentially expressed genes (DEGs) in RAW264.7 macrophage infected with B. ovis. The DEGs related to immune pathway were identified by Kyoto Encyclopedia of Genes and Genomes (KEGG) and Gene Ontology (GO) functional enrichment analysis. Quantitative real-time PCR (qRT-PCR) was performed to validate the transcriptome sequencing data. In total, we identified 337 up-regulated and 264 down-regulated DEGs in B. ovis-infected group versus mock group. Top 20 pathways were enriched by KEGG analysis and 20 GO by functional enrichment analysis in DEGs involved in the molecular function, cellular component, and biological process and so on, which revealed multiple immunological pathways in RAW264.7 macrophage cells in response to B. ovis infection, including inflammatory response, immune system process, immune response, cytokine activity, chemotaxis, chemokine-mediated signaling pathway, chemokine activity, and CCR chemokine receptor binding. qRT-PCR results showed Ccl2 (ENSMUST00000000193), Ccl2 (ENSMUST00000124479), Ccl3 (ENSMUST00000001008), Hmox1 (ENSMUST00000005548), Hmox1 (ENSMUST00000159631), Cxcl2 (ENSMUST00000075433), Cxcl2 (ENSMUST00000200681), Cxcl2 (ENSMUST00000200919), and Cxcl2 (ENSMUST00000202317). Our findings firstly elucidate the pathways involved in B. ovis-induced host immune response, which may lay the foundation for revealing the bacteria–host interaction and demonstrating the pathogenic mechanism of B. ovis.
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Affiliation(s)
- Zhixiong Zhou
- College of Veterinary Medicine, Southwest University, Chongqing, China
| | - Guojing Gu
- College of Veterinary Medicine, Southwest University, Chongqing, China
| | - Yichen Luo
- Immunology Research Center, Medical Research Institute, Southwest University, Chongqing, China.,College of Veterinary Medicine, Southwest University, Chongqing, China.,Veterinary Scientific Engineering Research Center, Chongqing, China
| | - Wenjie Li
- College of Veterinary Medicine, Southwest University, Chongqing, China
| | - Bowen Li
- College of Veterinary Medicine, Southwest University, Chongqing, China
| | - Yu Zhao
- College of Veterinary Medicine, Southwest University, Chongqing, China
| | - Juan Liu
- Immunology Research Center, Medical Research Institute, Southwest University, Chongqing, China.,College of Veterinary Medicine, Southwest University, Chongqing, China.,Veterinary Scientific Engineering Research Center, Chongqing, China
| | - Xuehong Shuai
- Immunology Research Center, Medical Research Institute, Southwest University, Chongqing, China.,College of Veterinary Medicine, Southwest University, Chongqing, China.,Veterinary Scientific Engineering Research Center, Chongqing, China
| | - Li Wu
- College of Veterinary Medicine, Southwest University, Chongqing, China.,Veterinary Scientific Engineering Research Center, Chongqing, China
| | - Jixuan Chen
- College of Veterinary Medicine, Southwest University, Chongqing, China.,Veterinary Scientific Engineering Research Center, Chongqing, China
| | - Cailiang Fan
- College of Veterinary Medicine, Southwest University, Chongqing, China.,Animal Disease Prevention and Control Center of Rongchang, Chongqing, China
| | - Qingzhou Huang
- College of Veterinary Medicine, Southwest University, Chongqing, China.,Veterinary Scientific Engineering Research Center, Chongqing, China
| | - Baoru Han
- College of Medical Informatics, Chongqing Medical University, Chongqing, China
| | - Jianjun Wen
- Department of Microbiology and Immunology, University of Texas Medical Branch at Galveston, Galveston, USA
| | - Hanwei Jiao
- Immunology Research Center, Medical Research Institute, Southwest University, Chongqing, China.,College of Veterinary Medicine, Southwest University, Chongqing, China.,Veterinary Scientific Engineering Research Center, Chongqing, China
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Elderbrook MJ, Schumaker BA, Ueti MW, Bastos de Almeida M, Vieira TSWJ, Vieira RFC, Sondgeroth KS. Comparison of 2 ELISAs for detecting exposure to Brucella ovis. J Vet Diagn Invest 2020; 32:700-705. [PMID: 32748706 DOI: 10.1177/1040638720943880] [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: 11/16/2022] Open
Abstract
Control of Brucella ovis infection in sheep flocks in the United States depends on early detection of B. ovis antibodies via serologic testing. We used 2,276 sheep sera and various cutoff values to compare seroprevalence and agreement between 2 ELISAs: the National Veterinary Services Laboratories (NVSL) B. ovis indirect ELISA and the IDEXX B. ovis ELISA kit. A subset of 295 sera was used to compare agreement and evaluate relative sensitivity and specificity of the 2 ELISAs with an agar gel immunodiffusion (AGID) test kit. There was no significant difference in B. ovis seroprevalence between the ELISAs; however, there was poor agreement between them. When the AGID test was used as the reference test, the IDEXX ELISA with a moderate cutoff value (S/P ratio = 45%) had the highest relative sensitivity of 38.1% and specificity of 92.0%. The NVSL ELISA with a lax cutoff value (S/P ratio = 0.75) had relative sensitivity of 19.1% and specificity of 94.6%. Receiver operating characteristic analysis revealed that optimal cutoff values for the NVSL and IDEXX ELISAs were 0.091 and 16.5%, respectively. This results in sensitivity and specificity of 85.7% and 31.8% for the NVSL ELISA, and sensitivity and specificity of 81.0% and 53.6% for the IDEXX ELISA, respectively.
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Affiliation(s)
- Molly J Elderbrook
- Department of Veterinary Sciences, University of Wyoming, Laramie, WY (Elderbrook, Schumaker, Sondgeroth); United States Department of Agriculture, Agricultural Research Service, Washington State University, Pullman, WA (Ueti); Department of Veterinary Medicine, Universidade Federal do Paraná, Curitiba, Paraná, Brazil (TSWJ Vieira, RFC Vieira); Instituto de Tecnologia do Paraná (TECPAR), Government of the State of Paraná, Curitiba, Paraná, Brazil (Almeida)
| | - Brant A Schumaker
- Department of Veterinary Sciences, University of Wyoming, Laramie, WY (Elderbrook, Schumaker, Sondgeroth); United States Department of Agriculture, Agricultural Research Service, Washington State University, Pullman, WA (Ueti); Department of Veterinary Medicine, Universidade Federal do Paraná, Curitiba, Paraná, Brazil (TSWJ Vieira, RFC Vieira); Instituto de Tecnologia do Paraná (TECPAR), Government of the State of Paraná, Curitiba, Paraná, Brazil (Almeida)
| | - Massaro W Ueti
- Department of Veterinary Sciences, University of Wyoming, Laramie, WY (Elderbrook, Schumaker, Sondgeroth); United States Department of Agriculture, Agricultural Research Service, Washington State University, Pullman, WA (Ueti); Department of Veterinary Medicine, Universidade Federal do Paraná, Curitiba, Paraná, Brazil (TSWJ Vieira, RFC Vieira); Instituto de Tecnologia do Paraná (TECPAR), Government of the State of Paraná, Curitiba, Paraná, Brazil (Almeida)
| | - Meila Bastos de Almeida
- Department of Veterinary Sciences, University of Wyoming, Laramie, WY (Elderbrook, Schumaker, Sondgeroth); United States Department of Agriculture, Agricultural Research Service, Washington State University, Pullman, WA (Ueti); Department of Veterinary Medicine, Universidade Federal do Paraná, Curitiba, Paraná, Brazil (TSWJ Vieira, RFC Vieira); Instituto de Tecnologia do Paraná (TECPAR), Government of the State of Paraná, Curitiba, Paraná, Brazil (Almeida)
| | - Thallitha S W J Vieira
- Department of Veterinary Sciences, University of Wyoming, Laramie, WY (Elderbrook, Schumaker, Sondgeroth); United States Department of Agriculture, Agricultural Research Service, Washington State University, Pullman, WA (Ueti); Department of Veterinary Medicine, Universidade Federal do Paraná, Curitiba, Paraná, Brazil (TSWJ Vieira, RFC Vieira); Instituto de Tecnologia do Paraná (TECPAR), Government of the State of Paraná, Curitiba, Paraná, Brazil (Almeida)
| | - Rafael F C Vieira
- Department of Veterinary Sciences, University of Wyoming, Laramie, WY (Elderbrook, Schumaker, Sondgeroth); United States Department of Agriculture, Agricultural Research Service, Washington State University, Pullman, WA (Ueti); Department of Veterinary Medicine, Universidade Federal do Paraná, Curitiba, Paraná, Brazil (TSWJ Vieira, RFC Vieira); Instituto de Tecnologia do Paraná (TECPAR), Government of the State of Paraná, Curitiba, Paraná, Brazil (Almeida)
| | - Kerry S Sondgeroth
- Department of Veterinary Sciences, University of Wyoming, Laramie, WY (Elderbrook, Schumaker, Sondgeroth); United States Department of Agriculture, Agricultural Research Service, Washington State University, Pullman, WA (Ueti); Department of Veterinary Medicine, Universidade Federal do Paraná, Curitiba, Paraná, Brazil (TSWJ Vieira, RFC Vieira); Instituto de Tecnologia do Paraná (TECPAR), Government of the State of Paraná, Curitiba, Paraná, Brazil (Almeida)
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