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Jiang D, Song X, Yang L, Zheng L, Niu K, Niu H. Screening of mRNA markers in early bovine tuberculosis blood samples. Front Vet Sci 2024; 11:1330693. [PMID: 38645645 PMCID: PMC11026862 DOI: 10.3389/fvets.2024.1330693] [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] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2023] [Accepted: 03/25/2024] [Indexed: 04/23/2024] Open
Abstract
Bovine tuberculosis (bTB) is a chronic zoonotic disease caused by Mycobacterium bovis. A large number of cattle are infected with bTB every year, resulting in huge economic losses. How to control bTB is an important issue in the current global livestock economy. In this study, the original transcriptome sequences related to this study were obtained from the dataset GSE192537 by searching the Gene Expression Omnibus (GEO) database. Our differential gene analysis showed that there were obvious biological activities related to immune activation and immune regulation in the early stage of bTB. Immune-related biological processes were more active in the early stage of bTB than in the late. There were obvious immune activation and immune cell recruitment in the early stage of bTB. Regulations in immune receptors are associated with pathophysiological processes of the early stage of bTB. A gene module consisting of 236 genes significantly related to the early stage of bTB was obtained by weighted gene co-expression network analysis, and 18 hub genes were further identified as potential biomarkers or therapeutic targets. Finally, by random forest algorithm and logistic regression modeling, FCRL1 was identified as a representative mRNA marker in early bTB blood. FCRL1 has the potential to be a diagnostic biomarker in early bTB.
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Affiliation(s)
- Dongfeng Jiang
- College of Animal Science and Technology, Henan University of Animal Husbandry and Economics, Zhengzhou, China
| | - Xiaoyi Song
- College of Animal Science and Technology, Henan University of Animal Husbandry and Economics, Zhengzhou, China
| | - Liyu Yang
- College of Animal Science and Technology, Henan University of Animal Husbandry and Economics, Zhengzhou, China
| | - Li Zheng
- College of Animal Science and Technology, Henan University of Animal Husbandry and Economics, Zhengzhou, China
| | - Kaifeng Niu
- College of Animal Science and Technology, Henan University of Animal Husbandry and Economics, Zhengzhou, China
| | - Hui Niu
- College of Animal Science and Technology, Henan University of Animal Husbandry and Economics, Zhengzhou, China
- Henan Province Animal Reproductive Control Engineering Technology Research Center, Zhengzhou, China
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Refaya AK, Vetrivel U, Palaniyandi K. Genomic Characterization of IS 6110 Insertions in Mycobacterium orygis. Evol Bioinform Online 2024; 20:11769343241240558. [PMID: 38586439 PMCID: PMC10996354 DOI: 10.1177/11769343241240558] [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] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2023] [Accepted: 03/04/2024] [Indexed: 04/09/2024] Open
Abstract
Mycobacterium orygis, a subspecies of the Mycobacterium tuberculosis complex (MTBC), has emerged as a significant concern in the context of One Health, with implications for zoonosis or zooanthroponosis or both. MTBC strains are characterized by the unique insertion element IS6110, which is widely used as a diagnostic marker. IS6110 transposition drives genetic modifications in MTBC, imparting genome plasticity and profound biological consequences. While IS6110 insertions are customarily found in the MTBC genomes, the evolutionary trajectory of strains seems to correlate with the number of IS6110 copies, indicating enhanced adaptability with increasing copy numbers. Here, we present a comprehensive analysis of IS6110 insertions in the M. orygis genome, utilizing ISMapper, and elucidate their genetic consequences in promoting successful host adaptation. Our study encompasses a panel of 67 paired-end reads, comprising 11 isolates from our laboratory and 56 sequences downloaded from public databases. Among these sequences, 91% exhibited high-copy, 4.5% low-copy, and 4.5% lacked IS6110 insertions. We identified 255 insertion loci, including 141 intragenic and 114 intergenic insertions. Most of these loci were either unique or shared among a limited number of isolates, potentially influencing strain behavior. Furthermore, we conducted gene ontology and pathway analysis, using eggNOG-mapper 5.0, on the protein sequences disrupted by IS6110 insertions, revealing 63 genes involved in diverse functions of Gene Ontology and 45 genes participating in various KEGG pathways. Our findings offer novel insights into IS6110 insertions, their preferential insertion regions, and their impact on metabolic processes and pathways, providing valuable knowledge on the genetic changes underpinning IS6110 transposition in M. orygis.
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Affiliation(s)
- Ahmed Kabir Refaya
- Department of Immunology, ICMR-National Institute for Research in Tuberculosis, Chetpet, Chennai, India
| | - Umashankar Vetrivel
- Department of Virology & Biotechnology/Bioinformatics Division, ICMR-National Institute for Research in Tuberculosis, Chetpet, Chennai, India
| | - Kannan Palaniyandi
- Department of Immunology, ICMR-National Institute for Research in Tuberculosis, Chetpet, Chennai, India
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Ferrari S, Zanoni M, Mangeli A, Pigoli C, D'Incau M, Alborali GL, Pacciarini ML, Boniotti MB. Bacteriological culture and direct PCR for detecting the Mycobacterium tuberculosis complex in the Italian eradication campaign: a decade of experience at the National Reference Laboratory. J Appl Microbiol 2024; 135:lxae064. [PMID: 38520154 DOI: 10.1093/jambio/lxae064] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2023] [Revised: 03/05/2024] [Accepted: 03/21/2024] [Indexed: 03/25/2024]
Abstract
AIMS Our study evaluates the capacity of direct real-time PCR for detecting Mycobacterium tuberculosis complex (MTBC), with a focus on diagnostic performances and the feasibility of implementing this protocol in an eradication campaign. Specifically, we compare the effectiveness of the direct PCR method to various culture systems used by the Italian National Reference Laboratory over the last decade to detect MTBC. METHODS AND RESULTS Bovine tissue samples were routinely tested and analyzed for bovine tuberculosis (bTB) confirmation using microbiological culture (solid and liquid media), histopathological analysis, and a direct PCR assay targeting IS6110, an insertion sequence specific to the MTBC that is widely used for tuberculosis diagnosis. The direct real-time PCR demonstrated a high concordance (K = 0.871) with microbiological culture, as well as good sensitivity (91.84%) and specificity (95.24%). In contrast, histopathology demonstrated lower concordance (K = 0.746) and performance levels (sensitivity 91.41%, specificity 82.88%). Liquid media promoted faster and more efficient growth of MTBC than solid media. M. bovis and M. caprae had the comparable ability to respond to the direct real-time PCR test and grow on the microbiological medium. CONCLUSIONS This study confirms that direct real-time PCR can detect MTBC with high diagnostic accuracy within a few days. This study found no significant differences in performance between culture media and direct PCR for M. bovis and M. caprae.
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Affiliation(s)
- Stefania Ferrari
- Centro Nazionale di Referenza per la Tubercolosi Bovina (CNR-bTB), Istituto Zooprofilattico Sperimentale della Lombardia e dell'Emilia Romagna (IZSLER), via Bianchi 9, 25124 Brescia, Italy
| | - Mariagrazia Zanoni
- Centro Nazionale di Referenza per la Tubercolosi Bovina (CNR-bTB), Istituto Zooprofilattico Sperimentale della Lombardia e dell'Emilia Romagna (IZSLER), via Bianchi 9, 25124 Brescia, Italy
| | - Anna Mangeli
- Centro Nazionale di Referenza per la Tubercolosi Bovina (CNR-bTB), Istituto Zooprofilattico Sperimentale della Lombardia e dell'Emilia Romagna (IZSLER), via Bianchi 9, 25124 Brescia, Italy
| | - Claudio Pigoli
- Sede Territoriale di Milano, Istituto Zooprofilattico Sperimentale della Lombardia e dell'Emilia Romagna (IZSLER), Via Celoria 12, 20133 Milano, Italy
| | - Mario D'Incau
- Centro Nazionale di Referenza per la Tubercolosi Bovina (CNR-bTB), Istituto Zooprofilattico Sperimentale della Lombardia e dell'Emilia Romagna (IZSLER), via Bianchi 9, 25124 Brescia, Italy
| | - Giovanni Loris Alborali
- Centro Nazionale di Referenza per la Tubercolosi Bovina (CNR-bTB), Istituto Zooprofilattico Sperimentale della Lombardia e dell'Emilia Romagna (IZSLER), via Bianchi 9, 25124 Brescia, Italy
| | - Maria Lodovica Pacciarini
- Centro Nazionale di Referenza per la Tubercolosi Bovina (CNR-bTB), Istituto Zooprofilattico Sperimentale della Lombardia e dell'Emilia Romagna (IZSLER), via Bianchi 9, 25124 Brescia, Italy
| | - Maria Beatrice Boniotti
- Centro Nazionale di Referenza per la Tubercolosi Bovina (CNR-bTB), Istituto Zooprofilattico Sperimentale della Lombardia e dell'Emilia Romagna (IZSLER), via Bianchi 9, 25124 Brescia, Italy
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Sánchez-Carvajal JM, Vera-Salmoral E, Huerta B, Galán-Relaño Á, Ruedas-Torres I, Larenas-Muñoz F, Luque I, Carrasco L, Gómez-Laguna J. Droplet digital PCR as alternative to microbiological culture for Mycobacterium tuberculosis complex detection in bovine lymph node tissue samples. Front Cell Infect Microbiol 2024; 14:1349999. [PMID: 38469351 PMCID: PMC10925636 DOI: 10.3389/fcimb.2024.1349999] [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] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2023] [Accepted: 02/07/2024] [Indexed: 03/13/2024] Open
Abstract
Introduction Bovine tuberculosis (bTB) caused by Mycobacterium tuberculosis complex (MTC) remains a significant concern for public health. Direct real-time PCR and droplet digital PCR (ddPCR) are proposed as alternative tools to enhance diagnostic precision and efficiency. This study aims to assess the diagnostic performance of a ddPCR assay targeting IS6110 for the detection of MTC DNA in both microbiological culture and fresh lymph node (LN) tissue samples obtained from cattle, in comparison with the established reference standard, the microbiological culture followed by real-time PCR. Methods The fresh LNs (N=100) were collected each from a different cattle carcass at the slaughterhouse. The limit of detection of ddPCR-IS6110 was set to 101 copies per 20 μl reaction. Results DdPCR-IS6110 detected 44 out of 49 reference-standard positive samples and yielded negative results in 47 out of 51 reference-standard negative samples, resulting in adjusted sensitivity (Se) and specificity (Sp) of 90.76% [95% confidence interval (CI): 82.58 - 98.96%)], and 100% (95% CI: 100%) respectively. The estimated adjusted false negative rate (FNR) was 9.23% (95% CI: 1.04 - 17.42%) and the false positive rate (FPR) was 0% (95% CI: 0%). When directly applied from fresh bovine LN tissues, ddPCR-IS6110 identified 47 out of 49 reference-standard positive samples as ddPCR-IS6110-positive and 42 out of 51 reference-standard negative samples as ddPCR-IS6110-negative, resulting in adjusted Se and Sp values of 94.80% [95% (CI): 88.52 - 100%] and 100% (95% CI: 100%), respectively. The adjusted FNR was 5.20% (95% CI: 0 - 11.50%) and the FPR was 0% (95% CI: 0%). Noteworthy, ddPCR-IS6110 disclosed as positive 9 samples negative to reference-standard. Discussion DdPCR-IS6110 proved to be a rapid, highly sensitive, and specific diagnostic tool as an alternative to reference-standard method.
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Affiliation(s)
- José María Sánchez-Carvajal
- Department of Anatomy and Comparative Pathology and Toxicology, Pathology and Immunology Group (UCO-PIG), Unidad de Investigación Competitiva (UIC) Zoonosis y Enfermedades Emergentes ENZOEM, University of Córdoba, Córdoba, Spain
| | - Eduardo Vera-Salmoral
- Department of Anatomy and Comparative Pathology and Toxicology, Pathology and Immunology Group (UCO-PIG), Unidad de Investigación Competitiva (UIC) Zoonosis y Enfermedades Emergentes ENZOEM, University of Córdoba, Córdoba, Spain
- Department of Animal Health, Unidad de Investigación Competitiva (UIC) Zoonosis y Enfermedades Emergentes (ENZOEM), University of Córdoba, University of Córdoba, Córdoba, Spain
| | - Belén Huerta
- Department of Animal Health, Unidad de Investigación Competitiva (UIC) Zoonosis y Enfermedades Emergentes (ENZOEM), University of Córdoba, University of Córdoba, Córdoba, Spain
| | - Ángela Galán-Relaño
- Department of Animal Health, Unidad de Investigación Competitiva (UIC) Zoonosis y Enfermedades Emergentes (ENZOEM), University of Córdoba, University of Córdoba, Córdoba, Spain
| | - Inés Ruedas-Torres
- Department of Anatomy and Comparative Pathology and Toxicology, Pathology and Immunology Group (UCO-PIG), Unidad de Investigación Competitiva (UIC) Zoonosis y Enfermedades Emergentes ENZOEM, University of Córdoba, Córdoba, Spain
- UK Health Security Agency (UKHSA), Salisbury, United Kingdom
| | - Fernanda Larenas-Muñoz
- Department of Anatomy and Comparative Pathology and Toxicology, Pathology and Immunology Group (UCO-PIG), Unidad de Investigación Competitiva (UIC) Zoonosis y Enfermedades Emergentes ENZOEM, University of Córdoba, Córdoba, Spain
| | - Inmaculada Luque
- Department of Animal Health, Unidad de Investigación Competitiva (UIC) Zoonosis y Enfermedades Emergentes (ENZOEM), University of Córdoba, University of Córdoba, Córdoba, Spain
| | - Librado Carrasco
- Department of Anatomy and Comparative Pathology and Toxicology, Pathology and Immunology Group (UCO-PIG), Unidad de Investigación Competitiva (UIC) Zoonosis y Enfermedades Emergentes ENZOEM, University of Córdoba, Córdoba, Spain
| | - Jaime Gómez-Laguna
- Department of Anatomy and Comparative Pathology and Toxicology, Pathology and Immunology Group (UCO-PIG), Unidad de Investigación Competitiva (UIC) Zoonosis y Enfermedades Emergentes ENZOEM, University of Córdoba, Córdoba, Spain
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Dressel D, VerCauteren KC, Lavelle MJ, Snow NP, Campa H. Use of rhodamine B as a biomarker in a simulated oral vaccine deployment against bovine tuberculosis in white-tailed deer. Front Vet Sci 2024; 11:1354772. [PMID: 38414651 PMCID: PMC10896993 DOI: 10.3389/fvets.2024.1354772] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2023] [Accepted: 01/17/2024] [Indexed: 02/29/2024] Open
Abstract
Introduction Free-ranging white-tailed deer (Odocoileus virginianus) in northeastern lower Michigan, (United States) are a self-sustaining reservoir for bovine tuberculosis (bTB). Farm mitigation practices, baiting bans, and antlerless deer harvests have been ineffective in eliminating bTB in white-tailed deer and risks to cattle. The apparent prevalence has remained relatively constant in deer, prompting interest among wildlife researchers, managers, and veterinarians for an effective means of vaccinating deer against bTB. The commonly used human vaccine for bTB, Bacillus Calmette Guerin (BCG), is the primary candidate with oral delivery being the logical means for vaccinating deer. Materials and methods We developed vaccine delivery units and incorporated the biomarker Rhodamine B before delivering them to deer to assess the level of coverage achievable. Following deployment of Rhodamine B-laden vaccine delivery units on 17 agricultural study sites in Alpena County, MI in Mar/Apr 2016, we sampled deer to detect evidence of Rhodamine B consumption. Results and discussion We collected a total of 116 deer and sampled them for vibrissae/rumen marking and found 66.3% (n = 77) of the deer collected exhibited evidence of vaccine delivery unit consumption. Understanding the level of coverage we achieved with oral delivery of a biomarker in vaccine delivery units to deer enables natural resource professionals to forecast expectations of a next step toward further minimizing bTB in deer.
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Affiliation(s)
- David Dressel
- Department of Fisheries and Wildlife, Michigan State University, East Lansing, MI, United States
| | - Kurt C VerCauteren
- USDA APHIS WS National Wildlife Research Center, Fort Collins, CO, United States
| | - Michael J Lavelle
- USDA APHIS WS National Wildlife Research Center, Fort Collins, CO, United States
| | - Nathan P Snow
- USDA APHIS WS National Wildlife Research Center, Fort Collins, CO, United States
| | - Henry Campa
- Department of Fisheries and Wildlife, Michigan State University, East Lansing, MI, United States
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Juste RA, Fernández-Veiga L, Fuertes M, Fernández-Ortiz de Murua I, Cardona G, Geijo MV, Garrido JM, Sevilla IA. A humoral diagnostic test outperforms cellular tests in a farm with a latent tuberculosis outbreak caused by a new Mycobacterium tuberculosis complex spoligotype that affected sheep but not goats. Front Vet Sci 2024; 10:1310205. [PMID: 38317788 PMCID: PMC10839146 DOI: 10.3389/fvets.2023.1310205] [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] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2023] [Accepted: 12/26/2023] [Indexed: 02/07/2024] Open
Abstract
Tuberculosis (TB) is a disease caused by members of the M. tuberculosis complex (MTC) that affects numerous species. M. caprae, a member of the complex which is close to M. bovis, is emerging and affects several different hosts that include goats, cattle, sheep, pigs, rabbits, wild boar, red deer, foxes and also humans. A new M. caprae spoligotype (SB2737) was isolated from an outbreak of sheep tuberculosis affecting a mixed sheep (323)-goat (29) farm in 2021. The index case was detected by the La Rioja slaughterhouse veterinary inspection. Tracing back to the farm of origin, both species were submitted to Comparative Intradermal Tuberculin Test (CITT) and M. bovis-specific antibody ELISA tests. A subsample was also examined by IFN-γ release assay (IGRA) and all positives were slaughtered and pathologically and microbiologically investigated. Only 1.2% of sheep and no goat were positive in the CITT, and 11.4% in the IGRA sheep subsample, while up to 36.8% were positive in two consecutive M. bovis-specific antibody ELISA tests. Goats had always tested negative in annual intradermal follow-up since 2013. Upon confirmation of the immunologically positive sheep at slaughter, all the remaining negative animals were killed and 29.2% of sheep were still found infected. This raised the final overall prevalence to 37.5%. Antibody ELISA was the most sensitive (81.4%) in vivo detection method still showing a 85.0% specificity relative to pathological and microbiological tuberculosis status. It was nearly 10 times more sensitive than skin test and had an 86.8% positive predictive value. Notwithstanding a possible singular pathogenesis of the new spoligotype, this outbreak adds up to previous reports suggesting that sheep tuberculosis could be huge reservoir of infection worldwide overlooked by skin test low sensitivity or simply lack of investigation. This makes it urgent to extend the use antibody tests to address the Trojan horse of hidden M. tuberculosis complex infections on bovine TB control programs.
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Affiliation(s)
- Ramon A. Juste
- Animal Health Department, NEIKER – Basque Institute for Agricultural Research and Development, Basque Research and Technology Alliance (BRTA), Derio, Spain
| | - Leire Fernández-Veiga
- Animal Health Department, NEIKER – Basque Institute for Agricultural Research and Development, Basque Research and Technology Alliance (BRTA), Derio, Spain
| | - Miguel Fuertes
- Animal Health Department, NEIKER – Basque Institute for Agricultural Research and Development, Basque Research and Technology Alliance (BRTA), Derio, Spain
| | | | - Guillermo Cardona
- Servicio de Ganadería, Diputacion Foral de Alava, Vitoria-Gasteiz, Spain
| | - Maria V. Geijo
- Animal Health Department, NEIKER – Basque Institute for Agricultural Research and Development, Basque Research and Technology Alliance (BRTA), Derio, Spain
| | - Joseba M. Garrido
- Animal Health Department, NEIKER – Basque Institute for Agricultural Research and Development, Basque Research and Technology Alliance (BRTA), Derio, Spain
| | - Iker A. Sevilla
- Animal Health Department, NEIKER – Basque Institute for Agricultural Research and Development, Basque Research and Technology Alliance (BRTA), Derio, Spain
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Jawahar A, Dhinakar Raj G, Pazhanivel N, Karthik K. Gross and histopathological features of tuberculosis in cattle, buffalo and spotted deer (Axis axis) caused by Mycobacterium orygis. J Comp Pathol 2024; 208:15-19. [PMID: 38042037 DOI: 10.1016/j.jcpa.2023.10.010] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2023] [Revised: 08/19/2023] [Accepted: 10/27/2023] [Indexed: 12/04/2023]
Abstract
Mycobacterium orygis has been isolated from several cases of tuberculosis in various species of animal in India but documentation of the histopathological lesions caused by this organism is scant. Lung and liver tissues with caseous nodules from cattle (n = 8), lung samples from spotted deer (Axis axis) (n = 5) and lung and mediastinal lymph node samples from buffalo (n = 9) were subjected to histopathology and isolation of Mycobacterium spp. Isolation was carried out using the BACTEC MGIT 960 Automated Mycobacterial Detection System and acid-fast positive cultures were identified to species level using polymerase chain reaction (PCR) employing published primer pairs. Three M. orygis isolates (two from cattle, one from deer) were obtained, whole genome sequenced and the sequences submitted to the National Center for Biotechnology Information Sequence Read Archive. Eight samples (four cattle, one deer and three buffalo) were confirmed as M. orygis positive by PCR. Histopathological examination of the M. orygis-PCR-positive cattle samples revealed acid-fast organisms in lung sections along with macrophages, epithelioid cells, lymphocytes and Langhans giant cells. Granuloma stages I to IV were seen in the cattle and buffalo samples and stage III in the spotted deer sample. This report is the first description of the gross and histopathological lesions of tuberculosis caused by M. orygis in buffalo and documents the gross and histopathological findings of M. orygis tuberculosis in cattle and deer.
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Affiliation(s)
- Ayyaru Jawahar
- Department of Animal Biotechnology, Madras Veterinary College, Tamil Nadu Veterinary and Animal Sciences University, Chennai 600 007, India
| | - Gopal Dhinakar Raj
- Department of Animal Biotechnology, Madras Veterinary College, Tamil Nadu Veterinary and Animal Sciences University, Chennai 600 007, India.
| | - Natesan Pazhanivel
- Department of Veterinary Pathology, Madras Veterinary College, Tamil Nadu Veterinary and Animal Sciences University, Chennai 600 007, India
| | - Kumaragurubaran Karthik
- Department of Veterinary Microbiology, Veterinary College and Research Institute, Udumalpet 642205, Tamil Nadu, India
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Cai Y, Gao W, Wang P, Zhang G, Wang X, Jiang L, Zeng J, Wang Y, Wu Z, Li Y. Comparative proteome analysis revealed the differences in response to both Mycobacterium tuberculosis and Mycobacterium bovis infection of bovine alveolar macrophages. Front Cell Infect Microbiol 2023; 13:1266884. [PMID: 38029268 PMCID: PMC10646506 DOI: 10.3389/fcimb.2023.1266884] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2023] [Accepted: 09/26/2023] [Indexed: 12/01/2023] Open
Abstract
Tuberculosis (TB), attributed to the Mycobacterium tuberculosis complex, is one of the most serious zoonotic diseases worldwide. Nevertheless, the host mechanisms preferentially leveraged by Mycobacterium remain unclear. After infection, both Mycobacterium tuberculosis (MTB) and Mycobacterium bovis (MB) bacteria exhibit intimate interactions with host alveolar macrophages; however, the specific mechanisms underlying these macrophage responses remain ambiguous. In our study, we performed a comparative proteomic analysis of bovine alveolar macrophages (BAMs) infected with MTB or MB to elucidate the differential responses of BAMs to each pathogen at the protein level. Our findings revealed heightened TB infection susceptibility of BAMs that had been previously infected with MTB or MB. Moreover, we observed that both types of mycobacteria triggered significant changes in BAM energy metabolism. A variety of proteins and signalling pathways associated with autophagy and inflammation-related progression were highly activated in BAMs following MB infection. Additionally, proteins linked to energy metabolism were highly expressed in BAMs following MTB infection. In summary, we propose that BAMs may resist MTB and MB infections via different mechanisms. Our findings provide critical insights into TB pathogenesis, unveiling potential biomarkers to facilitate more effective TB treatment strategies. Additionally, our data lend support to the hypothesis that MTB may be transmitted via cross-species infection.
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Affiliation(s)
- Yurong Cai
- Key Laboratory of Ministry of Education for Conservation and Utilization of Special Biological Resources in the Western China, Ningxia University, Yinchuan, China
| | - Weifeng Gao
- Key Laboratory of Ministry of Education for Conservation and Utilization of Special Biological Resources in the Western China, Ningxia University, Yinchuan, China
- School of Life Science, Ningxia University, Yinchuan, China
| | - Pu Wang
- Key Laboratory of Ministry of Education for Conservation and Utilization of Special Biological Resources in the Western China, Ningxia University, Yinchuan, China
| | - Gang Zhang
- Key Laboratory of Ministry of Education for Conservation and Utilization of Special Biological Resources in the Western China, Ningxia University, Yinchuan, China
| | - Xiaoping Wang
- The Fourth People’s Hospital of Ningxia Hui Autonomous Region, Reference Lab, Yinchuan, China
| | - Lingling Jiang
- Key Laboratory of Ministry of Education for Conservation and Utilization of Special Biological Resources in the Western China, Ningxia University, Yinchuan, China
| | - Jin Zeng
- Key Laboratory of Ministry of Education for Conservation and Utilization of Special Biological Resources in the Western China, Ningxia University, Yinchuan, China
- School of Life Science, Ningxia University, Yinchuan, China
| | - Yujiong Wang
- Key Laboratory of Ministry of Education for Conservation and Utilization of Special Biological Resources in the Western China, Ningxia University, Yinchuan, China
- School of Life Science, Ningxia University, Yinchuan, China
| | - Zhiwei Wu
- Key Laboratory of Ministry of Education for Conservation and Utilization of Special Biological Resources in the Western China, Ningxia University, Yinchuan, China
- Center for Public Health Research, Medical School, Nanjing University, Nanjing, China
| | - Yong Li
- Key Laboratory of Ministry of Education for Conservation and Utilization of Special Biological Resources in the Western China, Ningxia University, Yinchuan, China
- School of Life Science, Ningxia University, Yinchuan, China
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Contreras C, Alegría-Moran R, Duchens M, Ábalos P, López R, Retamal P. Specific and non-specific effects of Mycobacterium bovis BCG vaccination in dairy calves. Front Vet Sci 2023; 10:1278329. [PMID: 37869491 PMCID: PMC10588636 DOI: 10.3389/fvets.2023.1278329] [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] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2023] [Accepted: 09/18/2023] [Indexed: 10/24/2023] Open
Abstract
Bovine tuberculosis (bTB) is a chronic disease mainly caused by Mycobacterium bovis, a zoonotic pathogen with economic significance as it leads to reduced milk and meat production, and high costs for control measures. The Bacillus Calmette-Guérin (BCG) vaccine, primarily used to prevent tuberculosis in humans, has also been studied for controlling bTB. While showing effectiveness in preventing M. bovis infection and disease in cattle, the BCG vaccine can induce non-specific effects on the immune system, enhancing responses to infections caused by unrelated pathogens, and also having non-specific effects on lactation. The aim of this study is to describe both the specific and non-specific effects of BCG vaccination in calves from a commercial dairy herd in central Chile. Diagnosis of M. bovis infection was performed through the IFNγ release assay (IGRA) using ESAT6/CFP-10 and Rv3615c antigens. The records of milk production, somatic cell count (SCC), clinical mastitis (CM) and retained placenta (RP) during the first lactation were compared between vaccinated and non-vaccinated animals. The breed (Holstein Friesian [HF] v/s HF × Swedish Red crossbred [HFSR]) and the season (warm v/s cold) were also analyzed as categorical explanatory variables. Results of IGRA showed significant differences between vaccinated and control groups, indicating a vaccine efficacy of 58.5% at 18 months post vaccination in HFSR crossbred animals. Although milk production did not vary, SCC and CM showed differences between groups, associated to the breed and the season, respectively. When analyzing CM and RP as a whole entity of disease, BCG showed protection in all but the cold season variables. Overall, the BCG vaccine induced protective specific and non-specific effects on health parameters, which may be influenced by the breed of animals and the season. These results provide new features of BCG protection, supporting initiatives for its implementation as a complementary tool in bTB control.
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Affiliation(s)
- Catalina Contreras
- Facultad de Ciencias Veterinarias y Pecuarias, Universidad de Chile, Santiago, Chile
| | - Raúl Alegría-Moran
- Escuela de Medicina Veterinaria, Sede Santiago, Facultad de Recursos Naturales y Medicina Veterinaria, Universidad Santo Tomás, Santiago, Chile
| | - Mario Duchens
- Facultad de Ciencias Veterinarias y Pecuarias, Universidad de Chile, Santiago, Chile
| | - Pedro Ábalos
- Facultad de Ciencias Veterinarias y Pecuarias, Universidad de Chile, Santiago, Chile
| | - Renata López
- Magister en Ciencias Animales y Veterinarias, Universidad de Chile, Santiago, Chile
| | - Patricio Retamal
- Facultad de Ciencias Veterinarias y Pecuarias, Universidad de Chile, Santiago, Chile
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10
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Chang Y, Hartemink N, Byrne AW, Gormley E, McGrath G, Tratalos JA, Breslin P, More SJ, de Jong MCM. Inferring bovine tuberculosis transmission between cattle and badgers via the environment and risk mapping. Front Vet Sci 2023; 10:1233173. [PMID: 37841461 PMCID: PMC10572351 DOI: 10.3389/fvets.2023.1233173] [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] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2023] [Accepted: 08/29/2023] [Indexed: 10/17/2023] Open
Abstract
Bovine tuberculosis (bTB), caused by Mycobacterium bovis, is one of the most challenging and persistent health issues in many countries worldwide. In several countries, bTB control is complicated due to the presence of wildlife reservoirs of infection, i.e. European badger (Meles meles) in Ireland and the UK, which can transmit infection to cattle. However, a quantitative understanding of the role of cattle and badgers in bTB transmission is elusive, especially where there is spatial variation in relative density between badgers and cattle. Moreover, as these two species have infrequent direct contact, environmental transmission is likely to play a role, but the quantitative importance of the environment has not been assessed. Therefore, the objective of this study is to better understand bTB transmission between cattle and badgers via the environment in a spatially explicit context and to identify high-risk areas. We developed an environmental transmission model that incorporates both within-herd/territory transmission and between-species transmission, with the latter facilitated by badger territories overlapping with herd areas. Model parameters such as transmission rate parameters and the decay rate parameter of M. bovis were estimated by maximum likelihood estimation using infection data from badgers and cattle collected during a 4-year badger vaccination trial. Our estimation showed that the environment can play an important role in the transmission of bTB, with a half-life of M. bovis in the environment of around 177 days. Based on the estimated transmission rate parameters, we calculate the basic reproduction ratio (R) within a herd, which reveals how relative badger density dictates transmission. In addition, we simulated transmission in each small local area to generate a first between-herd R map that identifies high-risk areas.
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Affiliation(s)
- You Chang
- Quantitative Veterinary Epidemiology Group, Wageningen University and Research Centre, Wageningen, Netherlands
| | - Nienke Hartemink
- Quantitative Veterinary Epidemiology Group, Wageningen University and Research Centre, Wageningen, Netherlands
- Biometris, Wageningen University and Research Centre, Wageningen, Netherlands
| | - Andrew W. Byrne
- One-Health and Welfare Scientific Support Unit, Department of Agriculture, Food and the Marine, National Disease Control Centre, Dublin, Ireland
| | - Eamonn Gormley
- Tuberculosis Diagnostics and Immunology Research Centre, School of Agriculture, Food Science, and Veterinary Medicine, College of Life Sciences, University College Dublin, Dublin, Ireland
| | - Guy McGrath
- Centre for Veterinary Epidemiology and Risk Analysis, School of Veterinary Medicine, University College Dublin, Belfield, Dublin, Ireland
| | - Jamie A. Tratalos
- Centre for Veterinary Epidemiology and Risk Analysis, School of Veterinary Medicine, University College Dublin, Belfield, Dublin, Ireland
| | - Philip Breslin
- Ruminant Animal Health Division, Department of Agriculture, Food and the Marine, Dublin, Ireland
| | - Simon J. More
- Centre for Veterinary Epidemiology and Risk Analysis, School of Veterinary Medicine, University College Dublin, Belfield, Dublin, Ireland
| | - Mart C. M. de Jong
- Quantitative Veterinary Epidemiology Group, Wageningen University and Research Centre, Wageningen, Netherlands
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11
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Lellman S, Reynolds CK, Jones AB, Taylor N, Cramer R. LAP-MALDI MS Profiling and Identification of Potential Biomarkers for the Detection of Bovine Tuberculosis. J Agric Food Chem 2023; 71:13899-13905. [PMID: 37677086 PMCID: PMC10515614 DOI: 10.1021/acs.jafc.3c01879] [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] [Subscribe] [Scholar Register] [Received: 03/23/2023] [Revised: 08/14/2023] [Accepted: 08/22/2023] [Indexed: 09/09/2023]
Abstract
Detecting bovine tuberculosis (bTB) primarily relies on the tuberculin skin test, requiring two separate animal handling events with a period of incubation time (normally 3 days) between them. Here, we present the use of liquid atmospheric pressure (LAP)-MALDI for the identification of bTB infection, employing a three-class prediction model that was obtained by supervised linear discriminant analysis (LDA) and tested with bovine mastitis samples as disease-positive controls. Noninvasive collection of nasal swabs was used to collect samples, which were subsequently subjected to a short (<4 h) sample preparation method. Cross-validation of the three-class LDA model from the processed nasal swabs provided a sensitivity of 75.0% and specificity of 90.1%, with an overall classification accuracy of 85.7%. These values are comparable to those for the skin test, showing that LAP-MALDI MS has the potential to provide an alternative single-visit diagnostic platform that can detect bTB within the same day of sampling.
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Affiliation(s)
- Sophie
E. Lellman
- Department
of Chemistry, University of Reading, Whiteknights, Reading RG6 6DX, United Kingdom
| | - Christopher K. Reynolds
- School
of Agriculture, Policy and Development, University of Reading, Whiteknights, Reading RG6 6EU, United Kingdom
| | - A.K. Barney Jones
- School
of Agriculture, Policy and Development, University of Reading, Whiteknights, Reading RG6 6EU, United Kingdom
| | - Nick Taylor
- Veterinary
Epidemiology and Economics Research Unit (VEERU), PAN Livestock Services
Ltd, School of Agriculture, Policy and Development, University of Reading, Whiteknights, Reading RG6 6EU, United Kingdom
| | - Rainer Cramer
- Department
of Chemistry, University of Reading, Whiteknights, Reading RG6 6DX, United Kingdom
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12
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Hone J. Are predictions of bovine tuberculosis-infected herds unbiased and precise? Epidemiol Infect 2023; 151:e165. [PMID: 37726112 PMCID: PMC10600916 DOI: 10.1017/s0950268823001553] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2023] [Revised: 08/06/2023] [Accepted: 09/05/2023] [Indexed: 09/21/2023] Open
Abstract
Bovine tuberculosis (bTB) is prevalent among livestock and wildlife in many countries including New Zealand (NZ), a country which aims to eradicate bTB by 2055. This study evaluates predictions related to the numbers of livestock herds with bTB in NZ from 2012 to 2021 inclusive using both statistical and mechanistic (causal) modelling. Additionally, this study made predictions for the numbers of infected herds between 2022 and 2059. This study introduces a new graphical method representing the causal criteria of strength of association, such as R2, and the consistency of predictions, such as mean squared error. Mechanistic modelling predictions were, on average, more frequently (3 of 4) unbiased than statistical modelling predictions (1 of 4). Additionally, power model predictions were, on average, more frequently (3 of 4) unbiased than exponential model predictions (1 of 4). The mechanistic power model, along with annual updating, had the highest R2 and the lowest mean squared error of predictions. It also exhibited the closest approximation to unbiased predictions. Notably, significantly biased predictions were all underestimates. Based on the mechanistic power model, the biological eradication of bTB from New Zealand is predicted to occur after 2055. Disease eradication planning will benefit from annual updating of future predictions.
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Affiliation(s)
- Jim Hone
- Institute for Applied Ecology, University of Canberra, Canberra, ACT, Australia
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13
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Kumar R, Gandham S, Rana A, Maity HK, Sarkar U, Dey B. Divergent proinflammatory immune responses associated with the differential susceptibility of cattle breeds to tuberculosis. Front Immunol 2023; 14:1199092. [PMID: 37795082 PMCID: PMC10546398 DOI: 10.3389/fimmu.2023.1199092] [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] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2023] [Accepted: 08/29/2023] [Indexed: 10/06/2023] Open
Abstract
Tuberculosis (TB) in the bovine is one of the most predominant chronic debilitating infectious diseases primarily caused by Mycobacterium bovis. Besides, the incidence of TB in humans due to M. bovis, and that in bovines (bovine TB, bTB) due to M. tuberculosis- indicates cattle as a major reservoir of zoonotic TB. While India accounts for the highest global burden of both TB and multidrug-resistant TB in humans, systematic evaluation of bTB prevalence in India is largely lacking. Recent reports emphasized markedly greater bTB prevalence in exotic and crossbred cattle compared to indigenous cattle breeds that represent more than one-third of the total cattle population in India, which is the largest globally. This study aimed at elucidating the immune responses underlying the differential bTB incidence in prominent indigenous (Sahiwal), and crossbred (Sahiwal x Holstein Friesian) cattle reared in India. Employing the standard Single Intradermal Tuberculin Test (SITT), and mycobacterial gene-targeting single as well as multiplex-PCR-based screening revealed higher incidences of bovine tuberculin reactors as well as Mycobacterium tuberculosis Complex specific PCR positivity amongst the crossbred cattle. Further, ex vivo mycobacterial infection in cultures of bovine peripheral blood mononuclear cells (PBMC) from SITT, and myco-PCR negative healthy cattle exhibited significantly higher intracellular growth of M. bovis BCG, and M. tuberculosis H37Ra in the crossbred cattle PBMCs compared to native cattle. In addition, native cattle PBMCs induced higher pro-inflammatory cytokines and signaling pathways, such as interferon-gamma (IFN-γ), interleukin-17 (IL-17), tank binding kinase-1 (TBK-1), and nitric oxide (NO) upon exposure to live mycobacterial infection in comparison to PBMCs from crossbred cattle that exhibited higher expression of IL-1β transcripts. Together, these findings highlight that differences in the innate immune responses of these cattle breeds might be contributing to the differential susceptibility to bTB infection, and the resultant disparity in bTB incidence amongst indigenous, and crossbred cattle.
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Affiliation(s)
- Rishi Kumar
- National Institute of Animal Biotechnology, Hyderabad, Telangana, India
- Regional Centre for Biotechnology, Faridabad, Haryana, India
| | - Sripratyusha Gandham
- National Institute of Animal Biotechnology, Hyderabad, Telangana, India
- Regional Centre for Biotechnology, Faridabad, Haryana, India
| | - Avi Rana
- National Institute of Animal Biotechnology, Hyderabad, Telangana, India
| | - Hemanta Kumar Maity
- Department of Avian Sciences, West Bengal University of Animal and Fishery Sciences, Kolkata, West Bengal, India
| | - Uttam Sarkar
- Department of Animal Genetics and Breeding, West Bengal University of Animal and Fishery Sciences, Kolkata, West Bengal, India
| | - Bappaditya Dey
- National Institute of Animal Biotechnology, Hyderabad, Telangana, India
- Regional Centre for Biotechnology, Faridabad, Haryana, India
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14
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Blanco FC, Bigi MM, García EA, Elola MT, Vázquez CL, Bigi F. A Transcriptional Analysis of Cattle Immune Cells Reveals a Central Role of Type 1 Interferon in the In Vitro Innate Immune Response against Mycobacterium bovis. Pathogens 2023; 12:1159. [PMID: 37764968 PMCID: PMC10536033 DOI: 10.3390/pathogens12091159] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2023] [Revised: 09/11/2023] [Accepted: 09/12/2023] [Indexed: 09/29/2023] Open
Abstract
Bovine tuberculosis is a chronic infectious disease primarily caused by Mycobacterium bovis, a bacterium that affects cattle and other mammals, including humans. Despite the availability of vast research about the immune response mechanisms of human tuberculosis caused by Mycobacterium tuberculosis, the knowledge of bovine tuberculosis's immunology, particularly regarding the innate immune response, still remains scarce. In this study, we compared the transcriptome of cell cultures containing lymphocytes and M. bovis infected-macrophages with two strains of variable virulence, the virulent Mb04-303 strain and the attenuated Mb534. To that end, we infected bovine macrophages at a multiplicity of infection of one, and co-cultured the infections with autologous lymphocytes. RNA obtained from the co-cultures was sequenced to identify differentially expressed gene pathways by using the database Reactome. The RNA-seq analysis showed that the Mb04-303 infection upregulated the type 1 interferon signalling pathway, while it downregulated the KEAP1-NFE2L2 pathway. According to the literature, this last pathway is involved in the activation of antioxidant genes and inflammasome. In addition, the macrophages infected with Mb04-303 recruited more Galectin 8 than those infected with Mb534. This result indicates that Mb04-303 induced higher phagosome membrane damage, with the possible concomitant release of bacterial compounds into the cytoplasm that activates the type I signalling pathway. Altogether, Mb04-303 repressed the antioxidant and anti-inflammatory responses, likely impairing interleukin-1β activation, and trigged the canonical type 1 interferon signalling. Although these responses led to the control of bacterial replication during early infection, the virulent strain eventually managed to establish a successful infection.
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Affiliation(s)
- Federico Carlos Blanco
- Instituto de Agrobiotecnología y Biología Molecular (IABIMO), INTA-CONICET, N. Repetto and De los Reseros, Buenos Aires 1686, Argentina; (F.C.B.); (E.A.G.)
- Instituto de Biotecnología, CICVyA, Instituto Nacional de Tecnología Agropecuaria, N. Repetto and De los Reseros, Buenos Aires 1686, Argentina
| | - María Mercedes Bigi
- Instituto de Investigaciones Biomédicas (UBA-CONICET), Facultad de Medicina, Universidad de Buenos Aires, Buenos Aires 1417, Argentina;
| | - Elizabeth Andrea García
- Instituto de Agrobiotecnología y Biología Molecular (IABIMO), INTA-CONICET, N. Repetto and De los Reseros, Buenos Aires 1686, Argentina; (F.C.B.); (E.A.G.)
- Instituto de Biotecnología, CICVyA, Instituto Nacional de Tecnología Agropecuaria, N. Repetto and De los Reseros, Buenos Aires 1686, Argentina
| | - María Teresa Elola
- Instituto de Química y Fisicoquímica Biológicas Prof. Dr. Alejandro Paladini (UBA-CONICET), Facultad de Farmacia y Bioquímica, Universidad de Buenos Aires, Buenos Aires 1113, Argentina
| | - Cristina Lourdes Vázquez
- Instituto de Agrobiotecnología y Biología Molecular (IABIMO), INTA-CONICET, N. Repetto and De los Reseros, Buenos Aires 1686, Argentina; (F.C.B.); (E.A.G.)
- Instituto de Biotecnología, CICVyA, Instituto Nacional de Tecnología Agropecuaria, N. Repetto and De los Reseros, Buenos Aires 1686, Argentina
| | - Fabiana Bigi
- Instituto de Agrobiotecnología y Biología Molecular (IABIMO), INTA-CONICET, N. Repetto and De los Reseros, Buenos Aires 1686, Argentina; (F.C.B.); (E.A.G.)
- Instituto de Biotecnología, CICVyA, Instituto Nacional de Tecnología Agropecuaria, N. Repetto and De los Reseros, Buenos Aires 1686, Argentina
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15
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Vera-Salmoral E, Gómez-Laguna J, Galán-Relaño Á, Ruedas-Torres I, Carrasco L, Luque I, Huerta B, Sánchez-Carvajal JM. Optimization of real-time PCR protocols from lymph node bovine tissue for direct detection of Mycobacterium tuberculosis complex. Microbiol Spectr 2023; 11:e0034823. [PMID: 37707455 PMCID: PMC10581224 DOI: 10.1128/spectrum.00348-23] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2023] [Accepted: 07/22/2023] [Indexed: 09/15/2023] Open
Abstract
Bovine tuberculosis (bTB) is a zoonotic disease and a global health problem that is subjected to obligatory eradication programs in the European Union. Microbiological culture is an imperfect technique for bTB diagnosis. This study aims to compare and validate two DNA isolation protocols and three different specific DNA targets, IS6110, IS4, and mpb70, to confirm Mycobacterium tuberculosis complex (MTC) infection by real-time PCR directly from fresh tissue samples. Fresh lymph node samples were collected from 81 cattle carcasses at the slaughterhouse. A comparison of both extraction protocols was performed with IS6110-real-time PCR, showing an adjusted sensitivity (SE) of 78.34% and 95.9% for protocols 1 and 2, respectively, while the specificity (SP) was 100% in both cases. Afterward, the comparison between IS4 and mpb70 targets was performed from the samples extracted with protocol 2, obtaining an adjusted SE of 90.87% and 83.3%, respectively, and an SP of 100% in both cases. The positive likelihood ratio was ∞ for the three targets, and the negative likelihood ratio was 0.04, 0.091, and 0.16 for IS6110, IS4, and mpb70, respectively. Negative predictive values were ≥90%, ≥85%, and ≥80% for real-time PCR targeting IS6110, IS4, and mpb70, respectively, when the true prevalence is ≤60%, and the positive predictive value is 100% in any scenario of true prevalence. According to these results, the DNA extraction protocol 2 and real-time PCR targeting IS6110 or IS4 could be potential first-choice molecular assays to detect MTC directly in fresh bovine tissue samples. IMPORTANCE Bovine tuberculosis (bTB), a chronic infectious and zoonotic disease caused by Mycobacterium tuberculosis complex (MTC), is considered a neglected disease of global importance, causing a detrimental impact on public health, particularly in developing countries where tuberculosis remains a major health problem. However, debate around the efficacy of control measures is still an ongoing matter of concern, with poor diagnostic performance being considered one of the most relevant factors involved in the failure to eradicate the disease since many truly infected animals will be misclassified as bTB-free. This study highlights a DNA extraction protocol and real-time PCR targeting IS6110 or IS4 as potential first-choice molecular assays to detect MTC directly in fresh bovine tissue samples, providing rapid, highly sensitive, and specific diagnostic tools as an alternative to microbiology, which could take up to 3 months to complete, shortening the turnaround time for decision makers to be promptly informed.
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Affiliation(s)
- Eduardo Vera-Salmoral
- Department of Anatomy and Comparative Pathology and Toxicology, Pathology and Immunology Group (UCO-PIG), UIC Zoonosis y Enfermedades Emergentes ENZOEM, University of Córdoba, International Excellence Agrifood Campus ‘CeiA3’, Córdoba, Spain
- Department of Animal Health, UIC Zoonosis y Enfermedades Emergentes ENZOEM, International Excellence Agrifood Campus ‘CeiA3’, University of Córdoba, Córdoba, Spain
| | - Jaime Gómez-Laguna
- Department of Anatomy and Comparative Pathology and Toxicology, Pathology and Immunology Group (UCO-PIG), UIC Zoonosis y Enfermedades Emergentes ENZOEM, University of Córdoba, International Excellence Agrifood Campus ‘CeiA3’, Córdoba, Spain
| | - Ángela Galán-Relaño
- Department of Animal Health, UIC Zoonosis y Enfermedades Emergentes ENZOEM, International Excellence Agrifood Campus ‘CeiA3’, University of Córdoba, Córdoba, Spain
| | - Inés Ruedas-Torres
- Department of Anatomy and Comparative Pathology and Toxicology, Pathology and Immunology Group (UCO-PIG), UIC Zoonosis y Enfermedades Emergentes ENZOEM, University of Córdoba, International Excellence Agrifood Campus ‘CeiA3’, Córdoba, Spain
| | - Librado Carrasco
- Department of Anatomy and Comparative Pathology and Toxicology, Pathology and Immunology Group (UCO-PIG), UIC Zoonosis y Enfermedades Emergentes ENZOEM, University of Córdoba, International Excellence Agrifood Campus ‘CeiA3’, Córdoba, Spain
| | - Inmaculada Luque
- Department of Animal Health, UIC Zoonosis y Enfermedades Emergentes ENZOEM, International Excellence Agrifood Campus ‘CeiA3’, University of Córdoba, Córdoba, Spain
| | - Belén Huerta
- Department of Animal Health, UIC Zoonosis y Enfermedades Emergentes ENZOEM, International Excellence Agrifood Campus ‘CeiA3’, University of Córdoba, Córdoba, Spain
| | - José María Sánchez-Carvajal
- Department of Anatomy and Comparative Pathology and Toxicology, Pathology and Immunology Group (UCO-PIG), UIC Zoonosis y Enfermedades Emergentes ENZOEM, University of Córdoba, International Excellence Agrifood Campus ‘CeiA3’, Córdoba, Spain
- Institute of Virology and Immunology IVI, Sensemattstrasse, Mittelhäusern, Switzerland
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16
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Rodríguez-Hernández P, Cardador MJ, Ríos-Reina R, Sánchez-Carvajal JM, Galán-Relaño Á, Jurado-Martos F, Luque I, Arce L, Gómez-Laguna J, Rodríguez-Estévez V. Detection of Mycobacterium tuberculosis complex field infections in cattle using fecal volatile organic compound analysis through gas chromatography-ion mobility spectrometry combined with chemometrics. Microbiol Spectr 2023; 11:e0174323. [PMID: 37702485 PMCID: PMC10581036 DOI: 10.1128/spectrum.01743-23] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2023] [Accepted: 06/30/2023] [Indexed: 09/14/2023] Open
Abstract
Bovine tuberculosis is considered a re-emerging disease caused by different species from the Mycobacterium tuberculosis complex (MTC), important not only for the livestock sector but also for public health due to its zoonotic character. Despite the numerous efforts that have been carried out to improve the performance of the current antemortem diagnostic procedures, nowadays, they still pose several drawbacks, such as moderate to low sensitivity, highlighting the necessity to develop alternative and innovative tools to complement control and surveillance frameworks. Volatilome analysis is considered an innovative approach which has been widely employed in animal science, including animal health field and diagnosis, due to the useful and interesting information provided by volatile metabolites. Therefore, this study assesses the potential of gas chromatography coupled to ion mobility spectrometry (GC-IMS) to discriminate cattle naturally infected (field infections) by MTC from non-infected animals. Volatile organic compounds (VOCs) produced from feces were analyzed, employing the subsequent information through chemometrics. After the evaluation of variable importance for the projection of compounds, the final discriminant models achieved a robust performance in cross-validation, as well as high percentages of correct classification (>90%) and optimal data of sensitivity (91.66%) and specificity (99.99%) in external validation. The tentative identification of some VOCs revealed some coincidences with previous studies, although potential new compounds associated with the discrimination of infected and non-infected subjects were also addressed. These results provide strong evidence that a volatilome analysis of feces through GC-IMS coupled to chemometrics could become a valuable methodology to discriminate the infection by MTC in cattle. IMPORTANCE Bovine tuberculosis is endemic in many countries worldwide and poses important concerns for public health because of their zoonotic condition. However, current diagnostic techniques present several hurdles, such as low sensitivity and complexity, among others. In this regard, the development of new approaches to improve the diagnosis and control of this disease is considered crucial. Volatile organic compounds are small molecular mass metabolites which compose volatilome, whose analysis has been widely employed with success in different areas of animal science including animal health. The present study seeks to evaluate the combination of fecal volatilome analysis with chemometrics to detect field infections by bovine tuberculosis (Mycobacterium tuberculosis complex) in cattle. The good robust performance of discriminant models as well as the optimal data of sensitivity and specificity achieved highlight volatilome analysis as an innovative approach with huge potential.
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Affiliation(s)
- Pablo Rodríguez-Hernández
- Department of Animal Production, UIC Zoonosis y Enfermedades Emergentes ENZOEM, International Agrifood Campus of Excellence (ceiA3), University of Córdoba, Córdoba, Spain
| | - María José Cardador
- Department of Analytical Chemistry, International Agrifood Campus of Excellence (ceiA3), University of Córdoba, Córdoba, Spain
| | - Rocío Ríos-Reina
- Departamento de Nutrición y Bromatología, Área de Nutrición y Bromatología, Toxicología y Medicina Legal, Facultad de Farmacia, Universidad de Sevilla, Seville, Spain
| | - José María Sánchez-Carvajal
- Department of Anatomy and Comparative Pathology and Toxicology, Pathology and Immunology Group (UCO-PIG), UIC Zoonosis y Enfermedades Emergentes ENZOEM, International Agrifood Campus of Excellence (ceiA3), University of Córdoba, Córdoba, Spain
| | - Ángela Galán-Relaño
- Department of Animal Health, UIC Zoonosis y Enfermedades Emergentes ENZOEM, International Agrifood Campus of Excellence (ceiA3), University of Córdoba, Córdoba, Spain
| | | | - Inmaculada Luque
- Department of Animal Health, UIC Zoonosis y Enfermedades Emergentes ENZOEM, International Agrifood Campus of Excellence (ceiA3), University of Córdoba, Córdoba, Spain
| | - Lourdes Arce
- Department of Analytical Chemistry, International Agrifood Campus of Excellence (ceiA3), University of Córdoba, Córdoba, Spain
| | - Jaime Gómez-Laguna
- Department of Anatomy and Comparative Pathology and Toxicology, Pathology and Immunology Group (UCO-PIG), UIC Zoonosis y Enfermedades Emergentes ENZOEM, International Agrifood Campus of Excellence (ceiA3), University of Córdoba, Córdoba, Spain
| | - Vicente Rodríguez-Estévez
- Department of Animal Production, UIC Zoonosis y Enfermedades Emergentes ENZOEM, International Agrifood Campus of Excellence (ceiA3), University of Córdoba, Córdoba, Spain
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17
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Escobar-Chavarría O, Benitez-Guzman A, Jiménez-Vázquez I, Carrisoza-Urbina J, Arriaga-Pizano L, Huerta-Yépez S, Baay-Guzmán G, Gutiérrez-Pabello JA. Necrotic Cell Death and Inflammasome NLRP3 Activity in Mycobacterium bovis-Infected Bovine Macrophages. Cells 2023; 12:2079. [PMID: 37626889 PMCID: PMC10453650 DOI: 10.3390/cells12162079] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2023] [Revised: 08/05/2023] [Accepted: 08/10/2023] [Indexed: 08/27/2023] Open
Abstract
Mycobacterium bovis is a facultative intracellular bacterium that produces cellular necrosis in granulomatous lesions in bovines. Although M. bovis-induced inflammation actively participates in granuloma development, its role in necrotic cell death and in bovine macrophages has not been fully explored. In this study, we evaluate the effect of M. bovis AN5 and its culture filtrate protein extract (CFPE) on inflammasome activation in bovine macrophages and its consequences on cell death. Our results show that both stimuli induce necrotic cell death starting 4 h after incubation. CFPE treatment and M. bovis infection also induce the maturation of IL-1β (>3000 pg/mL), oligomerization of ASC (apoptosis-associated speck-like protein containing CARD), and activation of caspase-1, following the canonical activation pathway of the NLRP3 inflammasome. Inhibiting the oligomerization of NLRP3 and caspase-1 decreases necrosis among the infected or CFPE-stimulated macrophages. Furthermore, histological lymph node sections of bovines naturally infected with M. bovis contained cleaved gasdermin D, mainly in macrophages and giant cells within the granulomas. Finally, the induction of cell death (apoptosis and pyroptosis) decreased the intracellular bacteria count in the infected bovine macrophages, suggesting that cell death helps to control the intracellular growth of the mycobacteria. Our results indicate that M. bovis induces pyroptosis-like cell death that is partially related to the NLRP3 inflammasome activation and that the cell death process could control bacterial growth.
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Affiliation(s)
- Omar Escobar-Chavarría
- Departamento de Microbiología e Inmunología, Facultad de Medicina Veterinaria y Zootecnia, Universidad Nacional Autónoma de México, Mexico City 04510, Mexico; (O.E.-C.); (A.B.-G.); (I.J.-V.); (J.C.-U.)
| | - Alejandro Benitez-Guzman
- Departamento de Microbiología e Inmunología, Facultad de Medicina Veterinaria y Zootecnia, Universidad Nacional Autónoma de México, Mexico City 04510, Mexico; (O.E.-C.); (A.B.-G.); (I.J.-V.); (J.C.-U.)
| | - Itzel Jiménez-Vázquez
- Departamento de Microbiología e Inmunología, Facultad de Medicina Veterinaria y Zootecnia, Universidad Nacional Autónoma de México, Mexico City 04510, Mexico; (O.E.-C.); (A.B.-G.); (I.J.-V.); (J.C.-U.)
| | - Jacobo Carrisoza-Urbina
- Departamento de Microbiología e Inmunología, Facultad de Medicina Veterinaria y Zootecnia, Universidad Nacional Autónoma de México, Mexico City 04510, Mexico; (O.E.-C.); (A.B.-G.); (I.J.-V.); (J.C.-U.)
| | - Lourdes Arriaga-Pizano
- Unidad de Investigación Médica en Inmunoquímica, Hospital de Especialidades del Centro Médico Siglo XXI, Instituto Mexicano del Seguro Social, Mexico City 06720, Mexico;
| | - Sara Huerta-Yépez
- Unidad de Investigación en Enfermedades Oncológicas, Hospital Infantil de México, Federico Gómez, Mexico City 06720, Mexico; (S.H.-Y.); (G.B.-G.)
| | - Guillermina Baay-Guzmán
- Unidad de Investigación en Enfermedades Oncológicas, Hospital Infantil de México, Federico Gómez, Mexico City 06720, Mexico; (S.H.-Y.); (G.B.-G.)
| | - José A. Gutiérrez-Pabello
- Departamento de Microbiología e Inmunología, Facultad de Medicina Veterinaria y Zootecnia, Universidad Nacional Autónoma de México, Mexico City 04510, Mexico; (O.E.-C.); (A.B.-G.); (I.J.-V.); (J.C.-U.)
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18
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Khalid H, Pierneef L, van Hooij A, Zhou Z, de Jong D, Tjon Kon Fat E, Connelley TK, Hope JC, Corstjens PLAM, Geluk A. Development of lateral flow assays to detect host proteins in cattle for improved diagnosis of bovine tuberculosis. Front Vet Sci 2023; 10:1193332. [PMID: 37655261 PMCID: PMC10465798 DOI: 10.3389/fvets.2023.1193332] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2023] [Accepted: 07/25/2023] [Indexed: 09/02/2023] Open
Abstract
Bovine tuberculosis (bTB), caused by Mycobacterium bovis (M. bovis) infection in cattle, is an economically devastating chronic disease for livestock worldwide. Efficient disease control measures rely on early and accurate diagnosis using the tuberculin skin test (TST) and interferon-gamma release assays (IGRAs), followed by culling of positive animals. Compromised performance of TST and IGRA, due to BCG vaccination or co-infections with non-tuberculous mycobacteria (NTM), urges improved diagnostics. Lateral flow assays (LFAs) utilizing luminescent upconverting reporter particles (UCP) for quantitative measurement of host biomarkers present an accurate but less equipment- and labor-demanding diagnostic test platform. UCP-LFAs have proven applications for human infectious diseases. Here, we report the development of UCP-LFAs for the detection of six bovine proteins (IFN-γ, IL-2, IL-6, CCL4, CXCL9, and CXCL10), which have been described by ELISA as potential biomarkers to discriminate M. bovis infected from naïve and BCG-vaccinated cattle. We show that, in line with the ELISA data, the combined PPDb-induced levels of IFN-γ, IL-2, IL-6, CCL4, and CXCL9 determined by UCP-LFAs can discriminate M. bovis challenged animals from naïve (AUC range: 0.87-1.00) and BCG-vaccinated animals (AUC range: 0.97-1.00) in this cohort. These initial findings can be used to develop a robust and user-friendly multi-biomarker test (MBT) for bTB diagnosis.
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Affiliation(s)
- Hamza Khalid
- Department of Infectious Diseases, Leiden University Medical Center, Leiden, Netherlands
- Division of Immunology, The Roslin Institute, University of Edinburgh, Easter Bush Campus, Midlothian, United Kingdom
- Center for Inflammation Research, The Queen's Medical Research Institute, Edinburgh BioQuarter, Edinburgh, United Kingdom
| | - Louise Pierneef
- Department of Infectious Diseases, Leiden University Medical Center, Leiden, Netherlands
| | - Anouk van Hooij
- Department of Infectious Diseases, Leiden University Medical Center, Leiden, Netherlands
| | - Zijie Zhou
- Department of Infectious Diseases, Leiden University Medical Center, Leiden, Netherlands
| | - Danielle de Jong
- Department of Cell and Chemical Biology, Leiden University Medical Center, Leiden, Netherlands
| | - Elisa Tjon Kon Fat
- Department of Cell and Chemical Biology, Leiden University Medical Center, Leiden, Netherlands
| | - Timothy K. Connelley
- Division of Immunology, The Roslin Institute, University of Edinburgh, Easter Bush Campus, Midlothian, United Kingdom
| | - Jayne C. Hope
- Division of Immunology, The Roslin Institute, University of Edinburgh, Easter Bush Campus, Midlothian, United Kingdom
| | - Paul L. A. M. Corstjens
- Department of Cell and Chemical Biology, Leiden University Medical Center, Leiden, Netherlands
| | - Annemieke Geluk
- Department of Infectious Diseases, Leiden University Medical Center, Leiden, Netherlands
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19
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Damina SM, Barnes DA, Inuwa B, Ularamu GH, Bello M, Okaiyeto OS, Kudi AC, Thapa J, Nakajima C, Suzuki Y. Molecular Characterisation of Mycobacterium bovis Isolates from Cattle Slaughtered in Adamawa and Gombe States, North-Eastern Nigeria. Curr Issues Mol Biol 2023; 45:6055-6066. [PMID: 37504298 PMCID: PMC10377879 DOI: 10.3390/cimb45070382] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2023] [Revised: 07/12/2023] [Accepted: 07/15/2023] [Indexed: 07/29/2023] Open
Abstract
Bovine tuberculosis is endemic in Nigeria with control measures as provided by the laws of the country being minimally enforced mostly at the abattoirs only. This study focused on bovine tuberculosis in Adamawa and Gombe States. Tuberculosis lesions were observed in 183 of 13,688 slaughtered cattle in the regions between June and December 2020. Analysis of tissue samples resulted in 17 Mycobacterium bovis isolates, predominantly from Gombe State. Spoligotyping identified four spoligotypes, including SB0944, SB1025, SB1104, and one novel pattern. MIRU-VNTR analysis further differentiated these spoligotypes into eight profiles. All isolates belonged to the Af1 clonal complex. The study emphasises the need for broader coverage and more isolates to comprehensively understand the molecular epidemiology of bovine tuberculosis in Nigeria. To enhance research and surveillance, a cost-effective approach is proposed, utilising a discriminatory VNTR panel comprising five or nine loci. The five-locus panel consists of ETR-C, QUB26, QUB11b, MIRU04, and QUB323. Alternatively, the nine-locus panel includes ETR-A, ETR-B, QUB11a, and MIRU26. Implementing this approach would provide valuable insights into the genetic diversity of M. bovis strains in Nigeria. These findings are crucial for developing effective control measures and minimising the impact of bovine tuberculosis on both animal and human health.
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Affiliation(s)
| | - David Atomanyi Barnes
- Division of Bioresources, Hokkaido University International Institute for Zoonosis Control, Kita 20 Nishi 10, Kita-ku, Hokkaido 001-0020, Japan
| | - Bitrus Inuwa
- National Veterinary Research Institute, P.M.B.01, Vom 930103, Nigeria
| | | | - Mohammed Bello
- Department of Veterinary, Medicine, Faculty of Veterinary Medicine, Ahmadu Bello University, Zaria 810211, Nigeria
| | - Olu Solomon Okaiyeto
- Department of Veterinary, Medicine, Faculty of Veterinary Medicine, Ahmadu Bello University, Zaria 810211, Nigeria
| | - Ayuba Caleb Kudi
- Department of Veterinary, Medicine, Faculty of Veterinary Medicine, Ahmadu Bello University, Zaria 810211, Nigeria
| | - Jeewan Thapa
- Division of Bioresources, Hokkaido University International Institute for Zoonosis Control, Kita 20 Nishi 10, Kita-ku, Hokkaido 001-0020, Japan
| | - Chie Nakajima
- Division of Bioresources, Hokkaido University International Institute for Zoonosis Control, Kita 20 Nishi 10, Kita-ku, Hokkaido 001-0020, Japan
- International Collaboration Unit, Hokkaido University International Institute for Zoonosis Control, Kita 20 Nishi 10, Kita-ku, Hokkaido 001-0020, Japan
- Division of Research Support, Hokkaido University Institute for Vaccine Research and Development, Kita 20 Nishi 10, Kita-ku, Hokkaido 001-0020, Japan
| | - Yasuhiko Suzuki
- Division of Bioresources, Hokkaido University International Institute for Zoonosis Control, Kita 20 Nishi 10, Kita-ku, Hokkaido 001-0020, Japan
- International Collaboration Unit, Hokkaido University International Institute for Zoonosis Control, Kita 20 Nishi 10, Kita-ku, Hokkaido 001-0020, Japan
- Division of Research Support, Hokkaido University Institute for Vaccine Research and Development, Kita 20 Nishi 10, Kita-ku, Hokkaido 001-0020, Japan
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20
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Li P, Ding J, Xin T, Yu S, Banai M. Editorial: Veterinary Bacterial Zoonoses, volume II. Front Vet Sci 2023; 10:1245623. [PMID: 37520004 PMCID: PMC10374339 DOI: 10.3389/fvets.2023.1245623] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2023] [Accepted: 07/03/2023] [Indexed: 08/01/2023] Open
Affiliation(s)
- Peng Li
- Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Jiabo Ding
- Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Ting Xin
- Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Shengqing Yu
- Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Shanghai, China
| | - Menachem Banai
- Department of Bacteriology, Kimron Veterinary Institute, Bet Dagan, Israel
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21
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Abay Z, Nurpeisova A, Shorayeva K, Sadikaliyeva S, Yespembetov B, Syrym N, Sarmykova M, Jekebekov K, Abitayev R, Tokkarina G, Kalimolda E, Absatova Z, Moldagulova S, Yoo HS, Kassenov M, Zakarya K, Abduraimov Y. Safety and Protective Efficacy of a Candidate Vector-Based Vaccine for Bovine Tuberculosis. Vaccines (Basel) 2023; 11:1199. [PMID: 37515015 PMCID: PMC10385609 DOI: 10.3390/vaccines11071199] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2023] [Revised: 06/30/2023] [Accepted: 07/01/2023] [Indexed: 07/30/2023] Open
Abstract
This study presents the results of a survey of the safety and protective efficacy of a candidate vector-based vaccine for bovine tuberculosis, using an influenza vector with the NS1 mutation and expressing M. bovis protective antigens ESAT-6 and TB10.4. We vaccinated Balb/c outbred mice two times at 21 days apart. Our experimental design includes mice immunised with the candidate vaccine with or without adjuvant 15% Montanide Gel. The candidate vaccine's safety was determined by biometric analysis, and protective efficacy was assessed by bacteriological and histological experiments following a virulent M. bovis-8 strain challenge. Our data indicated that the adjuvant-free version of the vaccine ensured complete protection from the M. bovis-8 infection in mice.
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Affiliation(s)
- Zhandos Abay
- Research Institute for Biological Safety Problems, Guardeyskiy uts 080409, Kazakhstan
- Department of Biotechnology, Al-Farabi Kazakh National University, Almaty 050040, Kazakhstan
| | - Ainur Nurpeisova
- Research Institute for Biological Safety Problems, Guardeyskiy uts 080409, Kazakhstan
| | - Kamshat Shorayeva
- Research Institute for Biological Safety Problems, Guardeyskiy uts 080409, Kazakhstan
| | | | - Bolat Yespembetov
- Research Institute for Biological Safety Problems, Guardeyskiy uts 080409, Kazakhstan
| | - Nazym Syrym
- Research Institute for Biological Safety Problems, Guardeyskiy uts 080409, Kazakhstan
| | - Makhpal Sarmykova
- Research Institute for Biological Safety Problems, Guardeyskiy uts 080409, Kazakhstan
| | - Kuanysh Jekebekov
- Research Institute for Biological Safety Problems, Guardeyskiy uts 080409, Kazakhstan
| | - Ruslan Abitayev
- Research Institute for Biological Safety Problems, Guardeyskiy uts 080409, Kazakhstan
| | - Gaukhar Tokkarina
- Research Institute for Biological Safety Problems, Guardeyskiy uts 080409, Kazakhstan
| | - Elina Kalimolda
- Research Institute for Biological Safety Problems, Guardeyskiy uts 080409, Kazakhstan
| | - Zharkinay Absatova
- Research Institute for Biological Safety Problems, Guardeyskiy uts 080409, Kazakhstan
| | - Sabina Moldagulova
- Research Institute for Biological Safety Problems, Guardeyskiy uts 080409, Kazakhstan
| | - Han Sang Yoo
- College of Veterinary Medicine, Seoul National University, Seoul 08826, Republic of Korea
| | - Markhabat Kassenov
- Research Institute for Biological Safety Problems, Guardeyskiy uts 080409, Kazakhstan
| | - Kunsulu Zakarya
- Research Institute for Biological Safety Problems, Guardeyskiy uts 080409, Kazakhstan
| | - Yergali Abduraimov
- Research Institute for Biological Safety Problems, Guardeyskiy uts 080409, Kazakhstan
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22
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Hope JC, Khalid H, Thom ML, Howard CJ, Shaw DJ. Protective Efficacy of BCG Vaccination in Calves Vaccinated at Different Ages. Pathogens 2023; 12:789. [PMID: 37375479 DOI: 10.3390/pathogens12060789] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2023] [Revised: 05/30/2023] [Accepted: 05/30/2023] [Indexed: 06/29/2023] Open
Abstract
Mycobacterium bovis, the causative agent of bovine tuberculosis (bTB), is a globally prevalent pathogen with significant animal welfare, economic and public health impacts. In the UK, the control of bTB relies on detection via tuberculin skin tests with ancillary interferon gamma (IFN-γ) release assays, followed by culling infected animals. Vaccination with Bacille Calmette-Guérin (BCG) could be an important element of bTB control, and a number of studies have demonstrated its protective efficacy, particularly when young calves are vaccinated. Here, we compared immune responses and the protective efficacy of BCG in calves vaccinated within the first day of life and at three weeks of age. Significant protection from M. bovis infection was observed in BCG-vaccinated calves compared to non-vaccinated, age-matched controls. No significant differences were shown between calves vaccinated at one day and at three weeks of age when assessing the protective efficacy of BCG (measured as a reduction in lesions and bacterial burden). Antigen-specific IFN-γ levels were similar between the BCG-vaccinated groups, but significantly different from the non-vaccinated control animals. Antigen-specific IFN-γ expression post-BCG vaccination was correlated significantly with protection from M. bovis infection, whereas IFN-γ levels post-challenge correlated with pathology and bacterial burden. These results indicate that early-life vaccination with BCG could have a significant impact on M. bovis infection and, therefore, bTB incidence, and they demonstrate that age, at least within the first month of life, does not significantly impact the protective effect of vaccination.
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Affiliation(s)
- Jayne C Hope
- Division of Infection and Immunity, The Roslin Institute, and Royal (Dick) School of Veterinary Studies, The University of Edinburgh, Easter Bush, Midlothian EH25 9RG, UK
| | - Hamza Khalid
- Division of Infection and Immunity, The Roslin Institute, and Royal (Dick) School of Veterinary Studies, The University of Edinburgh, Easter Bush, Midlothian EH25 9RG, UK
| | - Michelle L Thom
- Institute for Animal Health, Compton RG20 7NN, UK
- The Pirbright Institute, Pirbright GU24 0NF, UK
| | | | - Darren J Shaw
- Division of Infection and Immunity, The Roslin Institute, and Royal (Dick) School of Veterinary Studies, The University of Edinburgh, Easter Bush, Midlothian EH25 9RG, UK
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23
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Kapalamula TF, Thapa J, Hayashida K, Chizimu J, Tanomsridachchai W, Nyenje ME, Mkakosya R, Nakajima C, Suzuki Y. Direct detection of Mycobacterium bovis by a dry loop-mediated isothermal amplification assay in cattle samples collected during routine abattoir examination in Malawi. J Vet Diagn Invest 2023; 35:307-310. [PMID: 37029660 PMCID: PMC10185984 DOI: 10.1177/10406387231164596] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/09/2023] Open
Abstract
The lack of quick, accurate, and low-cost detection methods has hindered the active control strategies for bovine tuberculosis (bTB) in resource-limited countries with a high burden of disease. We developed a dry loop-mediated isothermal amplification (LAMP) assay for rapid and specific detection of Mycobacterium bovis, the principal causative agent of bTB, and evaluated the efficacy of the assay using suspected bTB samples collected during routine meat inspection at major regional abattoirs in Malawi. Template genomic DNA was extracted directly from the granulomatous bTB-like lesion (crude extracted DNA), as well as growth from the incubated mycobacterial growth indicator tubes (MGIT). Field results were visualized by the naked eye within 40 min following a color change of the amplified products. The sensitivity and specificity of the dry LAMP assay while using 152 DNA samples extracted from MGIT with confirmed M. bovis results were 98% and 88%, respectively. When 43 randomly selected crude DNA samples from lesions were used, the sensitivity and specificity of the dry LAMP assay were 100% and 75%, respectively. Our LAMP assay offers the potential to meet the demands for a low-cost and rapid field detection tool for bTB in resource-limited countries in which bTB is endemic.
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Affiliation(s)
- Thoko Flav Kapalamula
- Division of Bioresources, International Institute for Zoonosis Control, Hokkaido University, Sapporo, Hokkaido, Japan
- Department of Pathobiology, Faculty of Veterinary Medicine, Lilongwe University of Agriculture and Natural Resources, Lilongwe, Malawi
| | - Jeewan Thapa
- Division of Bioresources, International Institute for Zoonosis Control, Hokkaido University, Sapporo, Hokkaido, Japan
| | - Kyoko Hayashida
- Division of Collaborations and Education, International Institute for Zoonosis Control, Hokkaido University, Sapporo, Hokkaido, Japan
- International Collaboration Unit, International Institute for Zoonosis Control, Hokkaido University, Sapporo, Hokkaido, Japan
| | - Joseph Chizimu
- Division of Bioresources, International Institute for Zoonosis Control, Hokkaido University, Sapporo, Hokkaido, Japan
- Zambian National Public Health Institute, Lusaka, Zambia
| | - Wimonrat Tanomsridachchai
- Division of Bioresources, International Institute for Zoonosis Control, Hokkaido University, Sapporo, Hokkaido, Japan
| | - Mirriam Ethel Nyenje
- Community Health Sciences Unit, National Tuberculosis Reference Laboratory, Lilongwe, Malawi
| | - Rajab Mkakosya
- Department of Pathology, Kamuzu University of Health Sciences, Blantyre, Malawi
| | - Chie Nakajima
- Division of Bioresources, International Institute for Zoonosis Control, Hokkaido University, Sapporo, Hokkaido, Japan
- International Collaboration Unit, International Institute for Zoonosis Control, Hokkaido University, Sapporo, Hokkaido, Japan
| | - Yasuhiko Suzuki
- Division of Bioresources, International Institute for Zoonosis Control, Hokkaido University, Sapporo, Hokkaido, Japan
- International Collaboration Unit, International Institute for Zoonosis Control, Hokkaido University, Sapporo, Hokkaido, Japan
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24
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Akhmetova A, Guerrero J, McAdam P, Salvador LCM, Crispell J, Lavery J, Presho E, Kao RR, Biek R, Menzies F, Trimble N, Harwood R, Pepler PT, Oravcova K, Graham J, Skuce R, du Plessis L, Thompson S, Wright L, Byrne AW, Allen AR. Genomic epidemiology of Mycobacterium bovis infection in sympatric badger and cattle populations in Northern Ireland. Microb Genom 2023; 9. [PMID: 37227264 DOI: 10.1099/mgen.0.001023] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/26/2023] Open
Abstract
Bovine tuberculosis (bTB) is a costly, epidemiologically complex, multi-host, endemic disease. Lack of understanding of transmission dynamics may undermine eradication efforts. Pathogen whole-genome sequencing improves epidemiological inferences, providing a means to determine the relative importance of inter- and intra-species host transmission for disease persistence. We sequenced an exceptional data set of 619 Mycobacterium bovis isolates from badgers and cattle in a 100 km2 bTB 'hotspot' in Northern Ireland. Historical molecular subtyping data permitted the targeting of an endemic pathogen lineage, whose long-term persistence provided a unique opportunity to study disease transmission dynamics in unparalleled detail. Additionally, to assess whether badger population genetic structure was associated with the spatial distribution of pathogen genetic diversity, we microsatellite genotyped hair samples from 769 badgers trapped in this area. Birth death models and TransPhylo analyses indicated that cattle were likely driving the local epidemic, with transmission from cattle to badgers being more common than badger to cattle. Furthermore, the presence of significant badger population genetic structure in the landscape was not associated with the spatial distribution of M. bovis genetic diversity, suggesting that badger-to-badger transmission is not playing a major role in transmission dynamics. Our data were consistent with badgers playing a smaller role in transmission of M. bovis infection in this study site, compared to cattle. We hypothesize, however, that this minor role may still be important for persistence. Comparison to other areas suggests that M. bovis transmission dynamics are likely to be context dependent, with the role of wildlife being difficult to generalize.
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Affiliation(s)
| | | | | | - Liliana C M Salvador
- Present address: School of Animal and Comparative Biomedical Sciences, University of Arizona, AZ, Tucson, USA
- Department of Infectious Diseases, College of Veterinary Medicine, University of Georgia, Athens, GA, USA
- Institute of Bioinformatics, University of Georgia, Athens, GA, USA
- Center for the Ecology of Infectious Diseases, University of Georgia, Athens, GA, USA
| | | | | | | | - Rowland R Kao
- University of Edinburgh, Roslin Institute, Edinburgh, UK
| | | | - Fraser Menzies
- Department of Agriculture, Environment and Rural Affairs (DAERA), Belfast, UK
| | - Nigel Trimble
- Department of Agriculture, Environment and Rural Affairs (DAERA), Belfast, UK
| | - Roland Harwood
- Department of Agriculture, Environment and Rural Affairs (DAERA), Belfast, UK
| | | | | | | | - Robin Skuce
- Agrifood and Biosciences Institute, Belfast, UK
| | - Louis du Plessis
- Department of Biosystems Science and Engineering, ETH Zurich, Basel, Switzerland
- Swiss Institute of Bioinformatics, Lausanne, Switzerland
| | | | | | - Andrew W Byrne
- Department of Agriculture Food and the Marine (DAFM), Dublin, Ireland
- Agrifood and Biosciences Institute, Belfast, UK
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25
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Gałązka M, Didkowska A, Anusz K, Pyziel-Serafin A. A review of tuberculosis and parasitic disease co-infection in ungulates, with regard to the potential threat to European bison ( Bison bonasus). Pol J Vet Sci 2023; 26:155-161. [PMID: 36961266 DOI: 10.24425/pjvs.2023.145018] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/25/2023]
Abstract
Bovine tuberculosis (BTB) is a dangerous zoonosis which presents a serious problem for endangered species such as European bison ( Bison bonasus). Little is known about the influence of parasitic co-infections on the course and diagnosis of tuberculosis in animals. The best known co-infection in cattle is Fasciola hepatica and Mycobacterium bovis. The aim of this study was to review the most recent literature regarding tuberculosis and parasite co-infection in ungulates and relate the results to European bison. Our findings indicate that any comprehensive diagnosis of BTB should include parasitological monitoring, and the possible impact of such invasions on cellular response-based tuberculosis tests should be taken into account. The diagnosis of BTB is complex, as is its pathogenesis, and parasitic infestations can have a significant impact on both. This should be taken into account during further research and monitoring of tuberculosis in European bison.
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Affiliation(s)
- M Gałązka
- Department of Food Hygiene and Public Health Protection, Institute of Veterinary Medicine, Warsaw University of Life Sciences (SGGW), Nowoursynowska 159, 02-776 Warsaw, Poland
- Municipal Zoological Garden in Warsaw, Ratuszowa 1/3 03-461, Warsaw, Poland
| | - A Didkowska
- Department of Food Hygiene and Public Health Protection, Institute of Veterinary Medicine, Warsaw University of Life Sciences (SGGW), Nowoursynowska 159, 02-776 Warsaw, Poland
| | - K Anusz
- Department of Food Hygiene and Public Health Protection, Institute of Veterinary Medicine, Warsaw University of Life Sciences (SGGW), Nowoursynowska 159, 02-776 Warsaw, Poland
| | - A Pyziel-Serafin
- Department of Food Hygiene and Public Health Protection, Institute of Veterinary Medicine, Warsaw University of Life Sciences (SGGW), Nowoursynowska 159, 02-776 Warsaw, Poland
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Morris RP, Montoya T, Price N, Nicklin B, Hogarth PJ, Mayers J, Sawyer J, McGoldrick A. Development and validation of a one-tube, nested real-time PCR method suitable for routine detection of Mycobacterium bovis in animal tissue. J Appl Microbiol 2023; 134:7055946. [PMID: 36822626 DOI: 10.1093/jambio/lxad038] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2023] [Revised: 02/13/2023] [Accepted: 02/22/2023] [Indexed: 02/25/2023]
Abstract
AIMS Development and validation of a real-time PCR test for high-throughput routine screening of animal tissue for Mycobacterium bovis and other Mycobacterium tuberculosis complex (MTBC) members. METHODS AND RESULTS A preliminary study compared the results of a combination of five tissue preparation/DNA extraction methods and nine PCR assays on a panel of 92 cattle tissue samples of known M. bovis culture status (55 positive and 37 negative). The combination of DNA extraction and PCR was found to be important in achieving optimal detection of M. bovis. The optimal combination of a simple tissue preparation/DNA extraction method and a one-tube, nested real-time PCR to maximize the sensitivity of detection of an M. bovis-specific RD4 deletion and an IS1081 MTBC-specific target was selected for further evaluation. In total, tissue samples collected from 981 cattle and 366 non-bovine animals and submitted for routine TB culture were parallel tested with the selected method, as well as tissue samples obtained from 156 animals in certified TB-free cattle herds. CONCLUSION For cattle, the optimized RD4-IS1081 PCR test exhibited a diagnostic sensitivity of 96% (95% CI: 94-97%) and specificity of 97% (95% CI: 95-98%) compared to culture. Specificity was 100% when testing the 156 samples from known TB-free cattle. For non-bovine species, the PCR had a diagnostic sensitivity of 93% (95% CI: 83-98%) and a specificity of 99% (95% CI: 97-100%).
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Affiliation(s)
- Rowan P Morris
- Animal & Plant Health Agency, Staplake Mount, Starcross, Exeter, Devon EX6 8PE, United Kingdom
| | - Teresa Montoya
- Animal & Plant Health Agency, Staplake Mount, Starcross, Exeter, Devon EX6 8PE, United Kingdom
| | - Natasha Price
- Animal & Plant Health Agency, Staplake Mount, Starcross, Exeter, Devon EX6 8PE, United Kingdom
| | - Babita Nicklin
- Animal & Plant Health Agency, The Elms, College Road, Sutton Bonington LE12 5RB, United Kingdom
| | - Philip J Hogarth
- Animal & Plant Health Agency, Woodham Lane, New Haw, Addlestone, Surrey KT15 3NB, United Kingdom
| | - Jo Mayers
- Animal & Plant Health Agency, Staplake Mount, Starcross, Exeter, Devon EX6 8PE, United Kingdom
| | - Jason Sawyer
- Animal & Plant Health Agency, Woodham Lane, New Haw, Addlestone, Surrey KT15 3NB, United Kingdom
| | - Adrian McGoldrick
- Animal & Plant Health Agency, Staplake Mount, Starcross, Exeter, Devon EX6 8PE, United Kingdom
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Carrisoza-Urbina J, Bedolla-Alva MA, Hernández-Pando R, López-Macías C, Huerta-Yepez S, Baay-Guzmán G, Juárez-Ramírez M, Gutiérrez-Pabello JA. Mycobacterium bovis naturally infected calves present a higher bacterial load and proinflammatory response than adult cattle. Front Vet Sci 2023; 10:1105716. [PMID: 37180066 PMCID: PMC10172680 DOI: 10.3389/fvets.2023.1105716] [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] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2022] [Accepted: 04/10/2023] [Indexed: 05/15/2023] Open
Abstract
Granulomas are characteristic bovine tuberculosis lesions; studying this structure has improved our understanding of tuberculosis pathogenesis. However, the immune response that develops in granulomas of young cattle naturally infected with Mycobacterium bovis (M. bovis) has not been fully studied. Our previous work described an atypical pattern in granulomatous lesions of cattle younger than 4 months (calves) naturally infected previously M. bovis that did not correspond to the histological classification previously proposed. Histologically, granulomas from calves lack a connective tissue capsule and have fewer multinucleated giant cells (MGCs) and more acid-fast bacilli (AFB) than the classic tuberculosis lesions found in cattle older than 1 year (adults); this suggests a deficient immune response against M. bovis infection in young animals. Therefore, we used IHC and digital pathology analysis to characterize the in situ immune response of granulomas from young and adult cattle. The immunolabeling quantification showed that granulomas from calves had more mycobacteria, CD3+ cells, IFN-γ, TNF-α, and inducible nitric oxide synthase (iNOS) than those of adult cattle. Furthermore, calf granulomas showed lower immunolabeling of MAC387+, CD79+, and WC1+ cells without connective tissue surrounding the lesion and were associated with less vimentin, Alpha Smooth Muscle Actin (α-SMA), and TGF-β compared with granulomas from adult cattle. Our results suggest that the immune responses in granulomas of cattle naturally infected with M. bovis may be age dependent. This implies that an exacerbated proinflammatory response may be associated with active tuberculosis, producing more necrosis and a lower microbicidal capacity in the granulomas of calves naturally infected with M. bovis.
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Affiliation(s)
- Jacobo Carrisoza-Urbina
- Laboratorio de Investigación en Tuberculosis y Brucelosis, Facultad de Medicina Veterinaria y Zootecnia, Universidad Nacional Autónoma de México, Mexico City, Mexico
| | - Mario A. Bedolla-Alva
- Departamento de Patología, Facultad de Medicina Veterinaria y Zootecnia, Universidad Nacional Autónoma de México, Mexico City, Mexico
| | - Rogelio Hernández-Pando
- Sección de Patología Experimental, Departamento de Patología, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubiran, Mexico City, Mexico
| | - Constantino López-Macías
- Unidad de Investigación Médica en Inmunoquímica, UMAE Hospital de Especialidades, Centro Médico Nacional Siglo XXI. Instituto Mexicano del Seguro Social (IMSS), Mexico City, Mexico
| | - Sara Huerta-Yepez
- Unidad de Investigación en Enfermedades Oncológicas, Hospital Infantil de México Federico Gómez, Mexico City, Mexico
| | - Guillermina Baay-Guzmán
- Unidad de Investigación en Enfermedades Oncológicas, Hospital Infantil de México Federico Gómez, Mexico City, Mexico
| | - Mireya Juárez-Ramírez
- Departamento de Patología, Facultad de Medicina Veterinaria y Zootecnia, Universidad Nacional Autónoma de México, Mexico City, Mexico
| | - José A. Gutiérrez-Pabello
- Laboratorio de Investigación en Tuberculosis y Brucelosis, Facultad de Medicina Veterinaria y Zootecnia, Universidad Nacional Autónoma de México, Mexico City, Mexico
- *Correspondence: José A. Gutiérrez-Pabello,
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Hasankhani A, Bahrami A, Mackie S, Maghsoodi S, Alawamleh HSK, Sheybani N, Safarpoor Dehkordi F, Rajabi F, Javanmard G, Khadem H, Barkema HW, De Donato M. In-depth systems biological evaluation of bovine alveolar macrophages suggests novel insights into molecular mechanisms underlying Mycobacterium bovis infection. Front Microbiol 2022; 13:1041314. [PMID: 36532492 PMCID: PMC9748370 DOI: 10.3389/fmicb.2022.1041314] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [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: 09/10/2022] [Accepted: 11/04/2022] [Indexed: 08/26/2023] Open
Abstract
OBJECTIVE Bovine tuberculosis (bTB) is a chronic respiratory infectious disease of domestic livestock caused by intracellular Mycobacterium bovis infection, which causes ~$3 billion in annual losses to global agriculture. Providing novel tools for bTB managements requires a comprehensive understanding of the molecular regulatory mechanisms underlying the M. bovis infection. Nevertheless, a combination of different bioinformatics and systems biology methods was used in this study in order to clearly understand the molecular regulatory mechanisms of bTB, especially the immunomodulatory mechanisms of M. bovis infection. METHODS RNA-seq data were retrieved and processed from 78 (39 non-infected control vs. 39 M. bovis-infected samples) bovine alveolar macrophages (bAMs). Next, weighted gene co-expression network analysis (WGCNA) was performed to identify the co-expression modules in non-infected control bAMs as reference set. The WGCNA module preservation approach was then used to identify non-preserved modules between non-infected controls and M. bovis-infected samples (test set). Additionally, functional enrichment analysis was used to investigate the biological behavior of the non-preserved modules and to identify bTB-specific non-preserved modules. Co-expressed hub genes were identified based on module membership (MM) criteria of WGCNA in the non-preserved modules and then integrated with protein-protein interaction (PPI) networks to identify co-expressed hub genes/transcription factors (TFs) with the highest maximal clique centrality (MCC) score (hub-central genes). RESULTS As result, WGCNA analysis led to the identification of 21 modules in the non-infected control bAMs (reference set), among which the topological properties of 14 modules were altered in the M. bovis-infected bAMs (test set). Interestingly, 7 of the 14 non-preserved modules were directly related to the molecular mechanisms underlying the host immune response, immunosuppressive mechanisms of M. bovis, and bTB development. Moreover, among the co-expressed hub genes and TFs of the bTB-specific non-preserved modules, 260 genes/TFs had double centrality in both co-expression and PPI networks and played a crucial role in bAMs-M. bovis interactions. Some of these hub-central genes/TFs, including PSMC4, SRC, BCL2L1, VPS11, MDM2, IRF1, CDKN1A, NLRP3, TLR2, MMP9, ZAP70, LCK, TNF, CCL4, MMP1, CTLA4, ITK, IL6, IL1A, IL1B, CCL20, CD3E, NFKB1, EDN1, STAT1, TIMP1, PTGS2, TNFAIP3, BIRC3, MAPK8, VEGFA, VPS18, ICAM1, TBK1, CTSS, IL10, ACAA1, VPS33B, and HIF1A, had potential targets for inducing immunomodulatory mechanisms by M. bovis to evade the host defense response. CONCLUSION The present study provides an in-depth insight into the molecular regulatory mechanisms behind M. bovis infection through biological investigation of the candidate non-preserved modules directly related to bTB development. Furthermore, several hub-central genes/TFs were identified that were significant in determining the fate of M. bovis infection and could be promising targets for developing novel anti-bTB therapies and diagnosis strategies.
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Affiliation(s)
- Aliakbar Hasankhani
- Department of Animal Science, College of Agriculture and Natural Resources, University of Tehran, Karaj, Iran
| | - Abolfazl Bahrami
- Department of Animal Science, College of Agriculture and Natural Resources, University of Tehran, Karaj, Iran
- Biomedical Center for Systems Biology Science Munich, Ludwig-Maximilians-University, Munich, Germany
| | - Shayan Mackie
- Faculty of Science, Earth Sciences Building, University of British Columbia, Vancouver, BC, Canada
| | - Sairan Maghsoodi
- Faculty of Paramedical Sciences, Kurdistan University of Medical Sciences, Kurdistan, Iran
| | - Heba Saed Kariem Alawamleh
- Department of Basic Scientific Sciences, AL-Balqa Applied University, AL-Huson University College, AL-Huson, Jordan
| | - Negin Sheybani
- Department of Animal and Poultry Science, College of Aburaihan, University of Tehran, Tehran, Iran
| | - Farhad Safarpoor Dehkordi
- Halal Research Center of IRI, FDA, Tehran, Iran
- Department of Food Hygiene and Quality Control, Faculty of Veterinary Medicine, University of Tehran, Tehran, Iran
| | - Fatemeh Rajabi
- Department of Agronomy and Plant Breeding, College of Agriculture and Natural Resources, University of Tehran, Karaj, Iran
| | - Ghazaleh Javanmard
- Department of Animal Science, College of Agriculture and Natural Resources, University of Tehran, Karaj, Iran
| | - Hosein Khadem
- Department of Agronomy and Plant Breeding, College of Agriculture and Natural Resources, University of Tehran, Karaj, Iran
| | - Herman W. Barkema
- Department of Production Animal Health, Faculty of Veterinary Medicine, University of Calgary, Calgary, AB, Canada
| | - Marcos De Donato
- Regional Department of Bioengineering, Tecnológico de Monterrey, Monterrey, Mexico
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Clarke C, Bernitz N, Goosen WJ, Miller MA. High-Specificity Test Algorithm for Bovine Tuberculosis Diagnosis in African Buffalo (Syncerus caffer) Herds. Pathogens 2022; 11. [PMID: 36558727 DOI: 10.3390/pathogens11121393] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2022] [Revised: 11/11/2022] [Accepted: 11/21/2022] [Indexed: 11/24/2022] Open
Abstract
Ante-mortem bovine tuberculosis (bTB) tests for buffaloes include the single comparative intradermal tuberculin test (SCITT), interferon-gamma (IFN-γ) release assay (IGRA) and IFN-γ-inducible protein 10 release assay (IPRA). Although parallel test interpretation increases the detection of Mycobacterium bovis (M. bovis)-infected buffaloes, these algorithms may not be suitable for screening buffaloes in historically bTB-free herds. In this study, the specificities of three assays were determined using M. bovis-unexposed herds, historically negative, and a high-specificity diagnostic algorithm was developed. Serial test interpretation (positive on both) using the IGRA and IPRA showed significantly greater specificity (98.3%) than individual (90.4% and 80.9%, respectively) tests or parallel testing (73%). When the SCITT was added, the algorithm had 100% specificity. Since the cytokine assays had imperfect specificity, potential cross-reactivity with nontuberculous mycobacteria (NTM) was investigated. No association was found between NTM presence (in oronasal swab cultures) and positive cytokine assay results. As a proof-of-principle, serial testing was applied to buffaloes (n = 153) in a historically bTB-free herd. Buffaloes positive on a single test (n = 28) were regarded as test-negative. Four buffaloes were positive on IGRA and IPRA, and M. bovis infection was confirmed by culture. These results demonstrate the value of using IGRA and IPRA in series to screen buffalo herds with no previous history of M. bovis infection.
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Kanipe C, Boggiatto PM, Putz EJ, Palmer MV. Histopathologic differences in granulomas of Mycobacterium bovis bacille Calmette Guérin (BCG) vaccinated and non-vaccinated cattle with bovine tuberculosis. Front Microbiol 2022; 13:1048648. [PMID: 36425039 PMCID: PMC9678917 DOI: 10.3389/fmicb.2022.1048648] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [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: 09/19/2022] [Accepted: 10/24/2022] [Indexed: 10/24/2023] Open
Abstract
Mycobacterium bovis (M. bovis) is the zoonotic bacterium responsible for bovine tuberculosis. An attenuated form of M. bovis, Bacillus Calmette-Guerin (BCG), is a modified live vaccine known to provide variable protection in cattle and other species. Protection for this vaccine is defined as a reduction in disease severity rather than prevention of infection and is determined by evaluation of the characteristic lesion of tuberculosis: the granuloma. Despite its recognized ability to decrease disease severity, the mechanism by which BCG imparts protection remains poorly understood. Understanding the histopathologic differences between granulomas which form in BCG vaccinates compared to non-vaccinates may help identify how BCG imparts protection and lead to an improved vaccine. Utilizing special stains and image analysis software, we examined 88 lymph nodes obtained from BGC-vaccinated and non-vaccinated animals experimentally infected with M. bovis. We evaluated the number of granulomas, their size, severity (grade), density of multinucleated giant cells (MNGC), and the amounts of necrosis, mineralization, and fibrosis. BCG vaccinates had fewer granulomas overall and smaller high-grade granulomas with less necrosis than non-vaccinates. The relative numbers of high- and low- grade lesions were similar as were the amounts of mineralization and the density of MNGC. The amount of fibrosis was higher in low-grade granulomas from vaccinates compared to non-vaccinates. Collectively, these findings suggest that BCG vaccination reduces bacterial establishment, resulting in the formation of fewer granulomas. In granulomas that form, BCG has a protective effect by containing their size, reducing the relative amount of necrosis, and increasing fibrosis in low-grade lesions. Vaccination did not affect the amount of mineralization or density of MNGC.
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Affiliation(s)
- C. Kanipe
- Infectious Bacterial Diseases Research Unit, National Animal Disease Center, Agricultural Research Service (USDA), Ames, IA, United States
- Immunobiology Graduate Program, Iowa State University, Ames, IA, United States
| | - P. M. Boggiatto
- Infectious Bacterial Diseases Research Unit, National Animal Disease Center, Agricultural Research Service (USDA), Ames, IA, United States
| | - E. J. Putz
- Infectious Bacterial Diseases Research Unit, National Animal Disease Center, Agricultural Research Service (USDA), Ames, IA, United States
| | - M. V. Palmer
- Infectious Bacterial Diseases Research Unit, National Animal Disease Center, Agricultural Research Service (USDA), Ames, IA, United States
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Clarke C, Kerr TJ, Warren RM, Kleynhans L, Miller MA, Goosen WJ. Identification and Characterisation of Nontuberculous Mycobacteria in African Buffaloes ( Syncerus caffer), South Africa. Microorganisms 2022; 10:microorganisms10091861. [PMID: 36144463 PMCID: PMC9503067 DOI: 10.3390/microorganisms10091861] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2022] [Revised: 09/14/2022] [Accepted: 09/16/2022] [Indexed: 12/04/2022] Open
Abstract
Diagnosis of bovine tuberculosis (bTB) may be confounded by immunological cross-reactivity to Mycobacterium bovis antigens when animals are sensitised by certain nontuberculous mycobacteria (NTMs). Therefore, this study aimed to investigate NTM species diversity in African buffalo (Syncerus caffer) respiratory secretions and tissue samples, using a combination of novel molecular tools. Oronasal swabs were collected opportunistically from 120 immobilised buffaloes in historically bTB-free herds. In addition, bronchoalveolar lavage fluid (BALF; n = 10) and tissue samples (n = 19) were obtained during post-mortem examination. Mycobacterial species were identified directly from oronasal swab samples using the Xpert MTB/RIF Ultra qPCR (14/120 positive) and GenoType CMdirect (104/120 positive). In addition, all samples underwent mycobacterial culture, and PCRs targeting hsp65 and rpoB were performed. Overall, 55 NTM species were identified in 36 mycobacterial culture-positive swab samples with presence of esat-6 or cfp-10 detected in 20 of 36 isolates. The predominant species were M. avium complex and M. komanii. Nontuberculous mycobacteria were also isolated from 6 of 10 culture-positive BALF and 4 of 19 culture-positive tissue samples. Our findings demonstrate that there is a high diversity of NTMs present in buffaloes, and further investigation should determine their role in confounding bTB diagnosis in this species.
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Didkowska A, Żmuda P, Orłowska B, Nowak M, Filip-Hutsch K, Cuper K, Krajewska-Wędzina M, Anusz K. Suspicion of bovine tuberculosis in sheep in the Małopolskie Voivodeship (southern Poland). Pol J Vet Sci 2022; 25:469-473. [PMID: 36155551 DOI: 10.24425/pjvs.2022.142032] [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] [Indexed: 06/16/2023]
Abstract
Bovine tuberculosis (BTB) in sheep (Ovis aries) is caused by Mycobacterium bovis and Mycobacterium caprae. Even though sheep have been considered less sensitive to BTB than other ruminants, they have been subject to increasing numbers of tuberculosis cases and it has been suggested that they may act as a disease reservoir in some regions. Aim of the study: Following a report of tuberculous-like gross lesions (repeated cases of purulent or caseous lymphadenitis and a single case of serosal tubercles on the peritoneum) from veterinarians working in a slaughterhouse in the Małopolskie Voivodeship, southern Poland, the aim of this study was to conduct ante-mortem BTB diagnostics in three flocks with suspected BTB. The animals for testing were selected randomly from the flocks; a blood sample for interferon-γ release assay (IGRA) and a single tuberculin skin test (TST) was performed on each sheep. All TST results were negative. The IGRA result was positive in two ewes from the same flock (four and five years of age); these two sheep were tested microbiologically using Stonebrink and Löwenstein-Jensen media. No gross lesions suggesting BTB were observed, and the culture results were negative. Based on the positive IGRA results, together with its high specificity in sheep, and the potential risk to humans posed by consuming local unpasteurized dairy products, we recommend introducing serological BTB screening in sheep from this area, and subjecting the positive results to confirmation by culture.
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Affiliation(s)
- A Didkowska
- Department of Food Hygiene and Public Health Protection, Institute of Veterinary Medicine, Warsaw University of Life Sciences (SGGW), Nowoursynowska 166, 02-787 Warsaw, Poland
| | - P Żmuda
- University Centre of Veterinary Medicine UJUR, Al. Mickiewicza 24/28, 30059 Kraków, Poland
| | - B Orłowska
- Department of Food Hygiene and Public Health Protection, Institute of Veterinary Medicine, Warsaw University of Life Sciences (SGGW), Nowoursynowska 166, 02-787 Warsaw, Poland
| | - M Nowak
- Department of Food Hygiene and Public Health Protection, Institute of Veterinary Medicine, Warsaw University of Life Sciences (SGGW), Nowoursynowska 166, 02-787 Warsaw, Poland
| | - K Filip-Hutsch
- Department of Food Hygiene and Public Health Protection, Institute of Veterinary Medicine, Warsaw University of Life Sciences (SGGW), Nowoursynowska 166, 02-787 Warsaw, Poland
| | - K Cuper
- Department of Food Hygiene and Public Health Protection, Institute of Veterinary Medicine, Warsaw University of Life Sciences (SGGW), Nowoursynowska 166, 02-787 Warsaw, Poland
| | - M Krajewska-Wędzina
- Department of Microbiology, National Veterinary Research Institute, Partyzantów 57, 24-100 Puławy, Poland
| | - K Anusz
- Department of Food Hygiene and Public Health Protection, Institute of Veterinary Medicine, Warsaw University of Life Sciences (SGGW), Nowoursynowska 166, 02-787 Warsaw, Poland
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Didkowska A, Orłowska B, Krajewska-Wędzina M, Bielecki W, Brzezińska S, Augustynowicz-Kopeć E, Olech W, Anusz K. Pregnancy in European bison (Bison bonaus) with generalized tuberculosis - no evidence of vertical transmission. Ann Agric Environ Med 2022; 29:300-302. [PMID: 35767767 DOI: 10.26444/aaem/141612] [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] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
INTRODUCTION AND OBJECTIVE One of the main health threats to the endangered European bison (Bison bonsasus) is bovine tuberculosis, the pathogenesis of which in this species is not fully known. The aim of the study was to confirm a possible case of vertical transmission from a pregnant European bison with generalized tuberculosis to its 12-week-old foetus. MATERIAL AND METHODS During the autopsy it was found that the bison had become pregnant, despite an advanced stage of tuberculosis. Material collected from the organs and foetus was placed on Lowenstein and Stonebrink media and incubated at 37 °C for 12 weeks. RESULTS Mycobacteria were isolated from the lungs and lymph nodes; however, the tissue of the foetus and fragments of the reproductive system were negative. CONCLUSIONS Vertical transmission was excluded, although it cannot be ruled out that infection could occur as pregnancy progresses.
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Affiliation(s)
- Anna Didkowska
- Department of Food Hygiene and Public Health Protection, Institute of Veterinary Medicine, University of Life Sciences (SGGW), Warsaw, Poland
| | - Blanka Orłowska
- Department of Food Hygiene and Public Health Protection, Institute of Veterinary Medicine, University of Life Sciences (SGGW), Warsaw, Poland
| | | | - Wojciech Bielecki
- Department of Pathology and Veterinary Diagnostics, Institute of Veterinary Medicine, University of Life Sciences (SGGW), Warsaw, Poland
| | - Sylwia Brzezińska
- Department of Microbiology, National Tuberculosis Reference Laboratory, National Tuberculosis and Lung Diseases Research Institute, Warsaw, Poland
| | - Ewa Augustynowicz-Kopeć
- Department of Microbiology, National Tuberculosis Reference Laboratory, National Tuberculosis and Lung Diseases Research Institute, Warsaw, Poland
| | - Wanda Olech
- Institute of Animal Sciences, University of Life Sciences (SGGW), Warsaw, Poland
| | - Krzysztof Anusz
- Department of Food Hygiene and Public Health Protection, Institute of Veterinary Medicine, University of Life Sciences (SGGW), Warsaw, Poland
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Dwyer R, Goosen W, Buss P, Kedward S, Manamela T, Hausler G, Chileshe J, Rossouw L, Fowler JH, Miller M, Witte C. Epidemiology of Mycobacterium bovis infection in free-ranging rhinoceros in Kruger National Park, South Africa. Proc Natl Acad Sci U S A 2022; 119:e2120656119. [PMID: 35666877 DOI: 10.1073/pnas.2120656119] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/03/2022] Open
Abstract
African rhinoceros survival is threatened by poaching, habitat loss, and climate effects. The presence of Mycobacterium bovis in wild populations creates an additional potential threat to health and conservation programs. This study reports a large survey of M. bovis infection in free-ranging rhinoceros. Our findings confirm a widespread, high infection burden in the rhinoceros population of Kruger National Park, South Africa and identify risk factors for infection. These findings provide a foundation for understanding the spread of bovine tuberculosis in complex ecosystems. This study reflects the complexity of investigating a multihost pathogen in a previously naïve system. It provides an opportunity to increase awareness of the global impact that tuberculosis can have on animal populations, food security, and conservation. Mycobacterium bovis infection, which is a prominent cause of bovine tuberculosis, has been confirmed by mycobacterial culture in African rhinoceros species in Kruger National Park (KNP), South Africa. In this population-based study of the epidemiology of M. bovis in 437 African rhinoceros (Diceros bicornis, Ceratotherium simum), we report an estimated prevalence of 15.4% (95% CI: 10.4 to 21.0%), based on results from mycobacterial culture and an antigen-specific interferon gamma release assay from animals sampled between 2016 and 2020. A significant spatial cluster of cases was detected near the southwestern park border, although infection was widely distributed. Multivariable logistic regression models, including demographic and spatiotemporal variables, showed a significant, increasing probability of M. bovis infection in white rhinoceros based on increased numbers of African buffalo (Syncerus caffer) herds in the vicinity of the rhinoceros sampling location. Since African buffaloes are important maintenance hosts for M. bovis in KNP, spillover of infection from these hosts to white rhinoceros sharing the environment is suspected. There was also a significantly higher proportion of M. bovis infection in black rhinoceros in the early years of the study (2016–2018) than in 2019 and 2020, which coincided with periods of intense drought, although other temporal factors could be implicated. Species of rhinoceros, age, and sex were not identified as risk factors for M. bovis infection. These study findings provide a foundation for further epidemiological investigation of M. bovis, a multihost pathogen, in a complex ecosystem that includes susceptible species that are threatened and endangered.
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Blanco FC, Queval CJ, Araujo FR, De Waard JH. Editorial: Recent Advances in Bovine Tuberculosis. Front Vet Sci 2022; 9:907353. [PMID: 35615249 PMCID: PMC9126120 DOI: 10.3389/fvets.2022.907353] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2022] [Accepted: 03/31/2022] [Indexed: 11/21/2022] Open
Affiliation(s)
- Federico Carlos Blanco
- CICVyA, Institute of Biotechnology, National Institute of Agricultural Technology (INTA), Buenos Aires, Argentina
| | | | - Flabio R Araujo
- Brazilian Agricultural Research Corporation (EMBRAPA), Brasília, Brazil
| | - Jacobus Henri De Waard
- One Health Research Group, Facultad de Ciencias Veterinarias, Universidad de Las Américas, Quito, Ecuador
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Li X, Xia A, Xu Z, Liu J, Fu S, Cao Z, Shen Y, Xie Y, Meng C, Chen X, Jiao X. Development and evaluation of a Mycobacterium bovis interferon-γ enzyme-linked immunospot (ELISpot) assay for detection of bovine tuberculosis. J Dairy Sci 2022; 105:6021-6029. [PMID: 35570041 DOI: 10.3168/jds.2021-21301] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2021] [Accepted: 03/13/2022] [Indexed: 11/19/2022]
Abstract
Bovine tuberculosis (bTB) caused by Mycobacterium bovis is an important zoonotic disease. This infection is difficult to control because of the limited ability of the tuberculin skin test (TST) and ancillary IFN-γ release assay to detect all infected animals. In this study, we aimed to develop an efficient assay based on the enzyme-linked immunospot (ELISpot) technique for the diagnosis of bTB, with IFN-γ monoclonal antibodies 3E9 and Bio-labeled 6F8 used as capture and detection antibodies, respectively. As expected, there were significantly more M. bovis-specific spot-forming units (SFU) in bTB-infected cattle than in healthy cattle when an M. bovis-specific antigen, CFP-10-ESAT-6 fusion protein (CE protein), was used. The M. bovis IFN-γ ELISpot assay demonstrated a high level of agreement (90.83%) with the BOVIGAM ELISA test (Thermo Fisher Scientific) for detecting bTB. Furthermore, 3 of 109 cattle tested negative by both the TST and the BOVIGAM ELISA tests, but positive by the ELISpot assay (TST- ELISA- ELISpot+). During subsequent long-term monitoring, these 3 cattle became TST+ ELISA+ ELISpot+. These results suggest that the M. bovis IFN-γ ELISpot assay we established could detect infected cattle earlier than the BOVIGAM ELISA test.
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Affiliation(s)
- Xin Li
- Jiangsu Key Laboratory of Zoonosis and Jiangsu Co-Innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou University, Yangzhou 225009, China; Key Laboratory of Prevention and Control of Biological Hazard Factors (Animal Origin) for Agrifood Safety and Quality of Ministry of Agriculture and Rural Affairs, Yangzhou University, Yangzhou 225009, China; Joint International Research Laboratory of Agriculture and Agri-Product Safety, Yangzhou University, Yangzhou 225009, China
| | - Aihong Xia
- Jiangsu Key Laboratory of Zoonosis and Jiangsu Co-Innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou University, Yangzhou 225009, China
| | - Zhengzhong Xu
- Key Laboratory of Prevention and Control of Biological Hazard Factors (Animal Origin) for Agrifood Safety and Quality of Ministry of Agriculture and Rural Affairs, Yangzhou University, Yangzhou 225009, China
| | - Jiaying Liu
- Key Laboratory of Prevention and Control of Biological Hazard Factors (Animal Origin) for Agrifood Safety and Quality of Ministry of Agriculture and Rural Affairs, Yangzhou University, Yangzhou 225009, China
| | - Shasha Fu
- Jiangsu Key Laboratory of Zoonosis and Jiangsu Co-Innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou University, Yangzhou 225009, China
| | - Zhaoli Cao
- Jiangsu Key Laboratory of Zoonosis and Jiangsu Co-Innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou University, Yangzhou 225009, China
| | - Yechi Shen
- Jiangsu Key Laboratory of Zoonosis and Jiangsu Co-Innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou University, Yangzhou 225009, China; Key Laboratory of Prevention and Control of Biological Hazard Factors (Animal Origin) for Agrifood Safety and Quality of Ministry of Agriculture and Rural Affairs, Yangzhou University, Yangzhou 225009, China; Joint International Research Laboratory of Agriculture and Agri-Product Safety, Yangzhou University, Yangzhou 225009, China
| | - Yuqing Xie
- Jiangsu Key Laboratory of Zoonosis and Jiangsu Co-Innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou University, Yangzhou 225009, China; Key Laboratory of Prevention and Control of Biological Hazard Factors (Animal Origin) for Agrifood Safety and Quality of Ministry of Agriculture and Rural Affairs, Yangzhou University, Yangzhou 225009, China
| | - Chuang Meng
- Key Laboratory of Prevention and Control of Biological Hazard Factors (Animal Origin) for Agrifood Safety and Quality of Ministry of Agriculture and Rural Affairs, Yangzhou University, Yangzhou 225009, China
| | - Xiang Chen
- Jiangsu Key Laboratory of Zoonosis and Jiangsu Co-Innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou University, Yangzhou 225009, China.
| | - Xinan Jiao
- Jiangsu Key Laboratory of Zoonosis and Jiangsu Co-Innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou University, Yangzhou 225009, China; Key Laboratory of Prevention and Control of Biological Hazard Factors (Animal Origin) for Agrifood Safety and Quality of Ministry of Agriculture and Rural Affairs, Yangzhou University, Yangzhou 225009, China; Joint International Research Laboratory of Agriculture and Agri-Product Safety, Yangzhou University, Yangzhou 225009, China.
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Singhla T, Pikulkaew S, Boonyayatra S. Performance of Loop-Mediated Isothermal Amplification Technique in Milk Samples for the Diagnosis of Bovine Tuberculosis in Dairy Cattle Using a Bayesian Approach. Pathogens 2022; 11:573. [PMID: 35631094 PMCID: PMC9144818 DOI: 10.3390/pathogens11050573] [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] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2022] [Revised: 05/06/2022] [Accepted: 05/11/2022] [Indexed: 11/16/2022] Open
Abstract
This study aimed to estimate the sensitivity (Se) and specificity (Sp) of loop-mediated isothermal amplification (LAMP) and single intradermal tuberculin (SIT) tests for the diagnosis of bovine tuberculosis (bTB) in dairy cattle in Thailand using a Bayesian approach. The SIT test was performed in 203 lactating dairy cattle from nine dairy farms located in Chiang Mai province, Thailand. Milk samples were collected for the LAMP test. Kappa analysis was performed to determine the agreement between the two tests. A one-population conditional independence Bayesian model was applied to estimate the Se and Sp of the two tests. Of 203 dairy cattle, 2 were positive for the SIT test using standard interpretation, whereas 38 were positive for the LAMP test. A poor agreement (kappa = 0) was observed between the two tests. The median Se and Sp of the SIT test using standard interpretation were 63.5% and 99.1%, respectively. The median Se and Sp of the LAMP test were 67.2% and 82.0%, respectively. The estimated true prevalence of bTB was 3.7%. The LAMP test with milk samples can potentially be used as a non-invasive screening test for the diagnosis of bTB in dairy cattle.
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Affiliation(s)
| | | | - Sukolrat Boonyayatra
- Department of Food Animal Clinic, Faculty of Veterinary Medicine, Chiang Mai University, Chiang Mai 50100, Thailand; (T.S.); (S.P.)
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Didkowska A, Orłowska B, Krajewska-Wędzina M, Augustynowicz-Kopeć E, Brzezińska S, Żygowska M, Wiśniewski J, Kaczor S, Welz M, Olech W, Anusz K. Microbiological and molecular monitoring for bovine tuberculosis in the Polish population of European bison (Bison bonasus). Ann Agric Environ Med 2021; 28:575-578. [PMID: 34969213 DOI: 10.26444/aaem/130822] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
INTRODUCTION AND OBJECTIVE In recent years, bovine tuberculosis (BTB) has become one of the major health hazards facing the European bison (EB, Bison bonasus), a vulnerable species that requires active protection, including regular and effective health monitoring. Monitoring of zoonotic disease in wildlife is also an important part of public health protection. The aim of the study was to determine whether BTB still influences the EB population in Poland. MATERIAL AND METHODS During 2017-2019, mandibular, retropharyngeal and mediastinal lymph nodes were collected from 90 EB during post-mortem examination, and then cultivated on Lowenstein-Jensen and Stonebrink media. Isolated strains were subjected to molecular analysis to determine the species, spoligotype and MIRU-VNTR pattern. RESULTS Lesions were found in lymph nodes originating from eight EB (8.89%). Positive microbiological cultures for mycobacteria were obtained in samples from six (6.67%) EB. The isolated strains were identified as Mycobacterium caprae (material from four EB) and atypical mycobacteria (material from two EB). For M. caprae strains spoligotype M. bovis 4_CA 1600 was identified and the MIRU-VNTR pattern was identified as 345751355413232. CONCLUSIONS It is recommended that this potentially dangerous disease should be monitored in EB via a comprehensive strategy based on a combination of microbiological and molecular methods. Such monitoring will protect the health of both animals and humans.
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Affiliation(s)
- Anna Didkowska
- Department of Food Hygiene and Public Health Protection, Institute of Veterinary Medicine, University of Life Sciences (SGGW), Warsaw, Poland
| | - Blanka Orłowska
- Department of Food Hygiene and Public Health Protection, Institute of Veterinary Medicine, University of Life Sciences (SGGW), Warsaw, Poland
| | | | - Ewa Augustynowicz-Kopeć
- Department of Microbiology, National Tuberculosis Reference Laboratory, National Tuberculosis and Lung Diseases Research Institute, Warsaw, Poland
| | - Sylwia Brzezińska
- Department of Microbiology, National Tuberculosis Reference Laboratory, National Tuberculosis and Lung Diseases Research Institute, Warsaw, Poland
| | - Marta Żygowska
- Department of Food Hygiene and Public Health Protection, Institute of Veterinary Medicine, University of Life Sciences (SGGW), Warsaw, Poland
| | - Jan Wiśniewski
- Department of Food Hygiene and Public Health Protection, Institute of Veterinary Medicine, University of Life Sciences (SGGW), Warsaw, Poland
| | | | | | - Wanda Olech
- Department of Animal Genetics and Conservation, Institute of Animal Sciences, University of Life Sciences (SGGW), Warsaw, Poland
| | - Krzysztof Anusz
- Department of Food Hygiene and Public Health Protection, Institute of Veterinary Medicine, University of Life Sciences (SGGW), Warsaw, Poland
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Mazorra-Carrillo JL, Alcaraz-López OA, López-Rincón G, Villarreal-Ramos B, Gutiérrez-Pabello JA, Esquivel-Solís H. Host Serum Proteins as Potential Biomarkers of Bovine Tuberculosis Resistance Phenotype. Front Vet Sci 2021; 8:734087. [PMID: 34869715 PMCID: PMC8637331 DOI: 10.3389/fvets.2021.734087] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2021] [Accepted: 10/25/2021] [Indexed: 12/19/2022] Open
Abstract
Eradication of bovine tuberculosis (bTB) continues to be a worldwide challenge. The lack of reliable vaccines dampens the control and eradication programs of Mycobacterium bovis infection and spread. Selection and breeding of cattle resistant to M. bovis infection would greatly enhance the effectiveness of bTB eradication programs. Here, we have evaluated the potential of serum proteins as biomarkers of cattle resistance to bTB in Holstein-Friesian cows, 6-8-year-old, born and raised in similar conditions in herds with bTB prevalence >30%. Serum proteins obtained from uninfected cows (bTB-resistant; R) were compared to those from infected cows (bTB-susceptible; S), defined by a negative or positive bTB diagnosis, respectively. bTB diagnosis included: (i) single intradermal (caudal fold) tuberculin test, (ii) whole blood IFN-gamma test, (iii) gross visible lesions in lymph nodes and lungs by inspection at the abattoir, and (iv) a bacteriological culture for M. bovis. Using 2D-GE and LC-ESI-MS/MS, we found higher expression levels of primary amine oxidase (AO), complement component 5 (C5), and serotransferrin (TF) in R cattle than S cattle. In-house developed and standardized ELISAs for these novel biomarkers showed the best sensitivities of 72, 77, 77%, and specificities of 94, 94, 83%, for AO, C5, and TF, respectively. AUC-ROC (95% CI) values of 0.8935 (0.7906-0.9964), 0.9290 (0.8484-1.010), and 0.8580 (0.7291-0.9869) were obtained at cut-off points of 192.0, 176.5 ng/ml, and 2.1 mg/ml for AO, C5, and TF, respectively. These proteins are involved in inflammatory/immunomodulatory responses to infections and may provide a novel avenue of research to determine the mechanisms of protection against bTB. Overall, our results indicate that these proteins could be novel biomarkers to help identify cattle resistant to bTB, which in turn could be used to strengthen the effectiveness of existing eradication programs against bTB.
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Affiliation(s)
- Jorge Luis Mazorra-Carrillo
- Biotecnología Médica y Farmacéutica, Centro de Investigación y Asistencia en Tecnología y Diseño del Estado de Jalisco, Guadalajara, Mexico
| | - Omar Antonio Alcaraz-López
- Biotecnología Médica y Farmacéutica, Centro de Investigación y Asistencia en Tecnología y Diseño del Estado de Jalisco, Guadalajara, Mexico.,Laboratorio de Investigación en Tuberculosis Bovina, Facultad de Medicina Veterinaria y Zootecnia, Universidad Nacional Autónoma de México, Mexico City, Mexico
| | - Gonzalo López-Rincón
- Biotecnología Médica y Farmacéutica, Centro de Investigación y Asistencia en Tecnología y Diseño del Estado de Jalisco, Guadalajara, Mexico
| | - Bernardo Villarreal-Ramos
- Department of Bacteriology, Animal and Plant Health Agency, Addlestone, United Kingdom.,Centre of Excellence for Bovine Tuberculosis, Institute for Biological, Environmental and Rural Sciences, Aberystwyth University, Aberystwyth, United Kingdom
| | - José A Gutiérrez-Pabello
- Laboratorio de Investigación en Tuberculosis Bovina, Facultad de Medicina Veterinaria y Zootecnia, Universidad Nacional Autónoma de México, Mexico City, Mexico
| | - Hugo Esquivel-Solís
- Biotecnología Médica y Farmacéutica, Centro de Investigación y Asistencia en Tecnología y Diseño del Estado de Jalisco, Guadalajara, Mexico
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40
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Avila LN, Gonçalves VSP, Perez AM. Corrigendum: Risk of Introduction of Bovine Tuberculosis (TB) Into TB-Free Herds in Southern Bahia, Brazil, Associated With Movement of Live Cattle. Front Vet Sci 2021; 8:789706. [PMID: 34869753 PMCID: PMC8632630 DOI: 10.3389/fvets.2021.789706] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2021] [Accepted: 10/06/2021] [Indexed: 11/24/2022] Open
Affiliation(s)
| | - Vitor S P Gonçalves
- Faculdade de Agronomia e Medicina Veterinária - FAV, Universidade de Brazilia, Brazilia, Brazil
| | - Andres M Perez
- College of Veterinary Medicine, University of Minnesota, St Paul, MN, United States
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41
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Madden JM, McGrath G, Sweeney J, Murray G, Tratalos JA, More SJ. Spatio-temporal models of bovine tuberculosis in the Irish cattle population, 2012-2019. Spat Spatiotemporal Epidemiol 2021; 39:100441. [PMID: 34774256 DOI: 10.1016/j.sste.2021.100441] [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] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/15/2021] [Revised: 07/08/2021] [Accepted: 07/19/2021] [Indexed: 11/16/2022]
Abstract
INTRODUCTION Bovine tuberculosis (bTB) is an important zoonotic disease which has serious and sometimes fatal effects on both human and non-human animals. In many countries it is endemic in the cattle population and has a considerable economic impact through losses in productivity and impacts on trade. The incidence rate in Ireland varies by herd and location and it is hoped that statistical disease-mapping models accounting for both spatio-temporal correlation and covariates might contribute towards explaining this variation. METHODS Ireland was divided into equally sized hexagons for computational efficiency (n = 997). Different spatio-temporal random-effects models (e.g. negative binomial Besag-York-Mollié) were explored, using comprehensive data from the national bTB eradication programme to examine the association between covariates and the number of bTB cattle. Leveraging a Bayesian framework, model parameter estimates were obtained using the integrated nested Laplace approximation (INLA) approach. Exceedance probabilities were calculated to identify spatial clusters of cases. RESULTS Models accounting for spatial correlation significantly improved model fit in comparison to non-spatial versions where independence between regions was assumed. In our final model at hexagon level, the number of cattle (IR = 1.142, CrI: 1.108 - 1.177 per 1000), the capture of badgers (IR = 5.951, CrI: 4.482 - 7.912), percentage of forest cover (IR = 1.031, CrI: 1.020 - 1.042) and number of farm fragments (IR = 1.012, CrI: 1.009 - 1.015 per 10 fragments) were all associated with an increased incidence of bTB. Habitat suitability for badgers, percentage of dairy herds and the number of cattle movements into the herd were not. As an epidemiological tool and to suggest future work, an interactive online dashboard was developed to monitor disease progression and disseminate results to the general public. CONCLUSION Accounting for spatial correlation is an important consideration in disease mapping applications and is often ignored in statistical models examining bTB risk factors. Over time, the same regions in Ireland generally show highest incidences of bTB and allocation of more resources to these areas may be needed to combat the disease. This study highlights national bTB incidence rates. Shifting from national level analysis to smaller geographical regions may help identify localised high-risk areas.
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Affiliation(s)
- Jamie M Madden
- Centre for Veterinary Epidemiology and Risk Analysis (CVERA), School of Veterinary Medicine, University College Dublin, Dublin, Ireland
| | - Guy McGrath
- Centre for Veterinary Epidemiology and Risk Analysis (CVERA), School of Veterinary Medicine, University College Dublin, Dublin, Ireland
| | - James Sweeney
- Department of Mathematics and Statistics, University of Limerick, Limerick, Ireland
| | - Gerard Murray
- Department of Agriculture, Food and Marine, Drumshanbo Regional Veterinary Office, Derryhallagh, Drumshanbo, Co. Leitirm, Ireland
| | - Jamie A Tratalos
- Centre for Veterinary Epidemiology and Risk Analysis (CVERA), School of Veterinary Medicine, University College Dublin, Dublin, Ireland
| | - Simon J More
- Centre for Veterinary Epidemiology and Risk Analysis (CVERA), School of Veterinary Medicine, University College Dublin, Dublin, Ireland
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Chan TH, Huang CS, Tu C, Jou R. Bovine tuberculosis in Taiwan, 2008-2019. Transbound Emerg Dis 2021; 69:e814-e822. [PMID: 34724711 DOI: 10.1111/tbed.14371] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [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: 06/08/2021] [Revised: 09/22/2021] [Accepted: 10/14/2021] [Indexed: 11/29/2022]
Abstract
Bovine tuberculosis (bTB) is a zoonosis caused by Mycobacterium bovis. The impact of bTB on global TB control has been underestimated. We adopted the One Health approach to human bTB surveillance in Taiwan. Of 20,972 human TB cases, 202 (1.0%) were bTB, 78.2% were in males, 85.1% were new cases, 83.2% were pulmonary TB, and most were in Central (52.5%) and Southern (24.8%) Taiwan. Only 18.8% of bTB patients had known animal contact. Of the 202 human M. bovis strains, 100% were resistant to pyrazinamide (PZA), 30.2% were concurrently resistant to isoniazid (INH) and 2.0% were multidrug resistant, defined as being resistant to at least INH and rifampin. Whereas, of the 22 animal M. bovis strains, 100% and 22.7% were resistant to PZA and INH, respectively. Seven spoligotypes and 25 mycobacterial interspersed repetitive unit genotypes were identified. The predominant genotype, SB0265, was also prevalent in livestock. Notably, six animal-specific M. bovis genotypes were identified. bTB differential diagnosis and drug resistance detection are crucial for TB control. Comprehensive surveillance and human-animal interface investigations are needed.
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Affiliation(s)
- Tai-Hua Chan
- Tuberculosis Research Center, Taiwan Centers for Disease Control, Taipei, Taiwan, ROC.,Reference Laboratory of Mycobacteriology, Taiwan Centers for Disease Control, Taipei, Taiwan, ROC
| | - Chun-Sheng Huang
- Animal Health Research Institute, Council of Agriculture, Executive Yuan, New Taipei City, Taiwan, ROC
| | - Chien Tu
- Animal Health Research Institute, Council of Agriculture, Executive Yuan, New Taipei City, Taiwan, ROC
| | - Ruwen Jou
- Tuberculosis Research Center, Taiwan Centers for Disease Control, Taipei, Taiwan, ROC.,Reference Laboratory of Mycobacteriology, Taiwan Centers for Disease Control, Taipei, Taiwan, ROC.,Institute of Microbiology and Immunology, National Yang Ming Chiao Tung University, Taipei, Taiwan, ROC
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de Melo EH, Gomes HM, Suffys PN, Lopes MQP, de Figueiredo Teixeira RL, Dos Santos ÍR, Franco MMJ, Langoni H, Paes AC, Afonso JAB, de Mendonça CL. Genotypic Characterization of Mycobacterium bovis Isolates From Dairy Cattle Diagnosed With Clinical Tuberculosis. Front Vet Sci 2021; 8:747226. [PMID: 34708105 PMCID: PMC8542897 DOI: 10.3389/fvets.2021.747226] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2021] [Accepted: 08/31/2021] [Indexed: 11/30/2022] Open
Abstract
Molecular diagnosis of bovine tuberculosis plays an essential role in the epidemiological knowledge of the disease. Bovine tuberculosis caused by Mycobacterium bovis represents a risk to human health. This study aimed to perform the genotypic characterization of M. bovis isolated from bovines diagnosed as tuberculosis from dairy herds in the state of Pernambuco, Brazil. Granulomas from 30 bovines were sent for microbiological culture, and colonies compatible with Mycobacterium spp. were obtained in at least one culture from 17/30 granulomas. All isolates were confirmed to be M. bovis by spoligotyping and 24loci MIRU-VNTR typing. While spoligotyping characterized the isolates as SB0121, SB0295, SB0852, SB0120, and an unclassified genotype, 24loci MIRU-VNTR rendered two clusters of two isolates each and 13 unique profiles. Loci ETR-A showed higher discriminatory power, and loci (ETR-B, ETR-C, MIRU16, MIRU27, and QUB26) showed moderate allelic diversity. This is the first study on the genetic variability of the infectious agent cause of bovine TB in Pernambuco and demonstrates variability of strains in the state. Thus, it corroborates the importance of this microorganism as agent of bovine tuberculosis and its zoonotic potential, this epidemiological tool being a determinant in the rigor of the sanitary practices of disease control in dairy herds.
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Affiliation(s)
| | - Harrison Magdinier Gomes
- Laboratório de Biologia Molecular Aplicada à Micobactérias, Fundação Oswaldo Cruz, Laboratório de Biologia Molecular Aplicada à Micobactérias, Rio de Janeiro, Brazil
| | - Philip Noel Suffys
- Laboratório de Biologia Molecular Aplicada à Micobactérias, Fundação Oswaldo Cruz, Laboratório de Biologia Molecular Aplicada à Micobactérias, Rio de Janeiro, Brazil
| | - Márcia Quinhones Pires Lopes
- Laboratório de Biologia Molecular Aplicada à Micobactérias, Fundação Oswaldo Cruz, Laboratório de Biologia Molecular Aplicada à Micobactérias, Rio de Janeiro, Brazil
| | - Raquel Lima de Figueiredo Teixeira
- Laboratório de Biologia Molecular Aplicada à Micobactérias, Fundação Oswaldo Cruz, Laboratório de Biologia Molecular Aplicada à Micobactérias, Rio de Janeiro, Brazil
| | - Ícaro Rodrigues Dos Santos
- Laboratório de Biologia Molecular Aplicada à Micobactérias, Fundação Oswaldo Cruz, Laboratório de Biologia Molecular Aplicada à Micobactérias, Rio de Janeiro, Brazil
| | - Marília Masello Junqueira Franco
- Departamento de Higiene Veterinária e Saúde Pública, Faculdade de Medicina Veterinária e Zootecnia, Universidade Estadual Paulista, Botucatu, Brazil
| | - Helio Langoni
- Departamento de Higiene Veterinária e Saúde Pública, Faculdade de Medicina Veterinária e Zootecnia, Universidade Estadual Paulista, Botucatu, Brazil
| | - Antonio Carlos Paes
- Departamento de Higiene Veterinária e Saúde Pública, Faculdade de Medicina Veterinária e Zootecnia, Universidade Estadual Paulista, Botucatu, Brazil
| | | | - Carla Lopes de Mendonça
- Clínica de Bovinos de Garanhuns, Universidade Federal Rural de Pernambuco, Garanhuns, Brazil
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Lima DAR, Zimpel CK, Patané JS, Silva-Pereira TT, Etges RN, Rodrigues RA, Dávila AMR, Ikuta CY, Ferreira Neto JS, Guimarães AMS, Araújo FR. Genomic analysis of an outbreak of bovine tuberculosis in a man-made multi-host species system: A call for action on wildlife in Brazil. Transbound Emerg Dis 2021; 69:e580-e591. [PMID: 34633756 DOI: 10.1111/tbed.14343] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2021] [Revised: 09/19/2021] [Accepted: 09/21/2021] [Indexed: 11/26/2022]
Abstract
We report on a 15-year-long outbreak of bovine tuberculosis (bTB) in wildlife from a Brazilian safari park. A timeline of diagnostic events and whole-genome sequencing (WGS) of 21 Mycobacterium bovis isolates from deer and llamas were analyzed. Accordingly, from 2003 to 2018, at least 16 animals, from eight species, died due to TB, which is likely an underestimated number. In three occasions since 2013, the deer presented positive tuberculin tests, leading to the park closure and culling of all deer. WGS indicated that multiple M. bovis strains were circulating, with at least three founding introductions since the park inauguration in 1977. Using a previously sequenced dataset of 71 M. bovis genomes from cattle, we found no recent transmission events between nearby farms and the park based on WGS. Lastly, by discussing socio-economic and environmental factors escaping current regulatory gaps that were determinant of this outbreak, we pledge for the development of a plan to report and control bTB in wildlife in Brazil.
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Affiliation(s)
- Daiane A R Lima
- Department of Veterinary Medicine, Graduate Program in Veterinary Sciences, School of Veterinary Medicine, Federal University of Mato Grosso do Sul, Campo Grande, Mato Grosso do Sul, Brazil
| | - Cristina K Zimpel
- Laboratory of Applied Research in Mycobacteria, Department of Microbiology, Institute of Biomedical Sciences, University of São Paulo, São Paulo, São Paulo, Brazil.,Department of Preventive Veterinary Medicine and Animal Health, School of Veterinary Medicine and Animal Sciences, University of São Paulo, São Paulo, São Paulo, Brazil
| | - José S Patané
- Center for Bioinformatics and Computational Biology, Butantan Institute, São Paulo, São Paulo, Brazil
| | - Taiana Tainá Silva-Pereira
- Laboratory of Applied Research in Mycobacteria, Department of Microbiology, Institute of Biomedical Sciences, University of São Paulo, São Paulo, São Paulo, Brazil.,Department of Preventive Veterinary Medicine and Animal Health, School of Veterinary Medicine and Animal Sciences, University of São Paulo, São Paulo, São Paulo, Brazil
| | - Rodrigo N Etges
- Livestock and Rural Development, Secretary of Agriculture, Porto Alegre, Rio Grande do Sul, Brazil
| | - Rudielle A Rodrigues
- Department of Veterinary Medicine, Graduate Program in Veterinary Sciences, School of Veterinary Medicine, Federal University of Mato Grosso do Sul, Campo Grande, Mato Grosso do Sul, Brazil
| | - Alberto M R Dávila
- Computational and Systems Biology Laboratory and Graduate Program on Biodiversity and Health, Oswaldo Cruz Institute, Fiocruz, Rio de Janeiro, Brazil
| | - Cássia Y Ikuta
- Department of Preventive Veterinary Medicine and Animal Health, School of Veterinary Medicine and Animal Sciences, University of São Paulo, São Paulo, São Paulo, Brazil
| | - José S Ferreira Neto
- Department of Preventive Veterinary Medicine and Animal Health, School of Veterinary Medicine and Animal Sciences, University of São Paulo, São Paulo, São Paulo, Brazil
| | - Ana Marcia S Guimarães
- Laboratory of Applied Research in Mycobacteria, Department of Microbiology, Institute of Biomedical Sciences, University of São Paulo, São Paulo, São Paulo, Brazil.,Department of Preventive Veterinary Medicine and Animal Health, School of Veterinary Medicine and Animal Sciences, University of São Paulo, São Paulo, São Paulo, Brazil
| | - Flábio R Araújo
- Embrapa Beef Cattle, Campo Grande, Mato Grosso do Sul, Brazil
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Ambaw M, Gelalcha BD, Bayissa B, Worku A, Yohannis A, Zewude A, Ameni G. Pathology of Bovine Tuberculosis in Three Breeds of Dairy Cattle and Spoligotyping of the Causative Mycobacteria in Ethiopia. Front Vet Sci 2021; 8:715598. [PMID: 34621807 PMCID: PMC8491842 DOI: 10.3389/fvets.2021.715598] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2021] [Accepted: 08/12/2021] [Indexed: 11/29/2022] Open
Abstract
Different breeds of cattle were observed to have a variable degree of susceptibility to bovine tuberculosis (bTB). The screening of bTB was conducted on 720 dairy cattle consisting of three breeds using the single intradermal cervical comparative tuberculin (SICCT) test. Besides this, 43 SICCT test-positive cattle were used to compare the severity of the pathology of bTB among the three breeds and to identify the causative mycobacteria using spoligotyping. The overall SICCT test positivity was 17.92% (129/720) by pooling all animals in the three farms. There was a significant difference in SICCT test positivity among the three breeds (χ2 = 71.06; p < 0.001); the highest (25.34%) was recorded in the crossbreed followed by the Boran breed (10.08%), while the least (3.14%) was recorded in the Jersey breed. On other hand, the highest median pathology score (10.0, interquartile range, IQR = 6.0–17.0) was recorded in Boran followed by cross (5.0, IQR = 3.5–7.5), while the least (3.0, IQR = 2.25–3.0) was recorded in Jersey. Thus, the difference in the median pathology scores was significant [Kruskal Wallis χ(2)2 = 18.78, p < 0.001] among the three breeds. Furthermore, multivariate analysis using ordinal logistic regression by considering age, sex, breed, reproductive status, and location of the farms also showed a significant [χ(2)2 = 11.97, p < 0.01] difference in pathology scores among the three breeds of cattle. Even at a single-herd level at Holeta, the difference in severity of pathology between the Boran and crossbreeds was significant (U = 33.5; p < 0.01). Culture positivity was 39% in 108 suspicious tissues. Fourteen Mycobacterium bovis (M. bovis) and two Mycobacterium tuberculosis (M. tuberculosis) were isolated from the lesions. All the 14 M. bovis isolates belonged to SB0912, while the two M. tuberculosis belonged to SIT54. In conclusion, although the frequency of the SICCT test positivity was high in the crossbreed, a more severe pathology was observed on the Boran (zebu) breed. In addition M. tuberculosis was isolated from TB lesions of dairy cattle, demonstrating the role of M. tuberculosis in causing TB in cattle.
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Affiliation(s)
- Mulualem Ambaw
- Ethiopian Institute of Agricultural Research, Kulumsa Agricultural Research Center, Assela, Ethiopia.,School of Veterinary Medicine, College of Agriculture and Veterinary Medicine, Jimma University, Jimma, Ethiopia
| | - Benti Deresa Gelalcha
- School of Veterinary Medicine, College of Agriculture and Veterinary Medicine, Jimma University, Jimma, Ethiopia
| | - Berecha Bayissa
- Vaccine Production and Drug Formulation Directorate, National Veterinary Institute, Bishoftu, Ethiopia
| | - Adane Worku
- Aklilu Lemma Institute of Pathobiology, Addis Ababa University, Addis Ababa, Ethiopia
| | - Aster Yohannis
- Ethiopian Institutes of Agricultural Research, Holeta Agricultural Research Center, Holeta, Ethiopia
| | - Aboma Zewude
- Malaria and Neglected Tropical Diseases, Ethiopian Public Health Institute, Addis Ababa, Ethiopia
| | - Gobena Ameni
- Vaccine Production and Drug Formulation Directorate, National Veterinary Institute, Bishoftu, Ethiopia.,Department of Veterinary Medicine, College of Agriculture and Veterinary Medicine, United Arab Emirates University, Al Ain, United Arab Emirates
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Kumar T, Singh M, Jangir BL, Arora D, Srinivasan S, Bidhan D, Yadav DC, Veerasami M, Bakker D, Kapur V, Jindal N. A Defined Antigen Skin Test for Diagnosis of Bovine Tuberculosis in Domestic Water Buffaloes ( Bubalus bubalis). Front Vet Sci 2021; 8:669898. [PMID: 34490387 PMCID: PMC8418101 DOI: 10.3389/fvets.2021.669898] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2021] [Accepted: 04/21/2021] [Indexed: 11/13/2022] Open
Abstract
Bovine tuberculosis (bTB) remains endemic in domestic water buffaloes (Bubalus bubalis) in India and elsewhere, with limited options for control other than testing and slaughter. The prescribed tuberculin skin tests with purified protein derivative (PPD) for diagnosis of bTB preclude the use of Bacille Calmette-Guérin (BCG)-based vaccination because of the antigenic cross-reactivity of vaccine strains with Mycobacterium bovis and related pathogenic members of the M. tuberculosis complex (MTBC). For the diagnosis of bTB in domestic water buffaloes, we here assessed a recently described defined-antigen skin test (DST) that comprises overlapping peptides representing the ESAT-6, CFP-10 and Rv3615c antigens, present in disease-causing members of the MTBC but missing in BCG strains. The performance characteristics of three doses (5, 10 or 20 μg/peptide) of the DST were assessed in natural tuberculin skin test reactor (n = 11) and non-reactor (n = 35) water buffaloes at an organized dairy farm in Hisar, India, and results were compared with the single intradermal skin test (SIT) using standard bovine tuberculin (PPD-B). The results showed a dose-dependent response of DST in natural reactor water buffaloes, although the SIT induced a significantly greater (P < 0.001) skin test response than the highest dose of DST used. However, using a cut-off of 2 mm or greater, the 5, 10, and 20 μg DST cocktail correctly classified eight, 10 and all 11 of the SIT-positive reactors, respectively, suggesting that the 20 μg DST cocktail has a diagnostic sensitivity (Se) of 1.0 (95% CI: 0.72-1.0) identical to that of the SIT. Importantly, none of the tested DST doses induced any measurable skin induration responses in the 35 SIT-negative animals, suggesting a specificity point estimate of 1.0 (95% CI: 0.9-1.0), also identical to that of the SIT and compares favorably with that of the comparative cervical test (Se = 0.85; 95% CI: 0.55-0.98). Overall, the results suggest that similar to tuberculin, the DST enables sensitive and specific diagnosis of bTB in water buffaloes. Future field trials to explore the utility of DST as a defined antigen replacement for tuberculin in routine surveillance programs and to enable BCG vaccination of water buffaloes are warranted.
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Affiliation(s)
- Tarun Kumar
- College of Veterinary Sciences, Lala Lajpat Rai University of Veterinary and Animal Sciences, Hisar, India
| | - Mahavir Singh
- College of Veterinary Sciences, Lala Lajpat Rai University of Veterinary and Animal Sciences, Hisar, India
| | - Babu Lal Jangir
- Department of Veterinary Pathology, Lala Lajpat Rai University of Veterinary and Animal Sciences, Hisar, India
| | - Devan Arora
- Haryana Pashu Vigyan Kendra, Lala Lajpat Rai University of Veterinary and Animal Sciences, Hisar, India
| | - Sreenidhi Srinivasan
- Huck Institutes of the Life Sciences, The Pennsylvania State University, University Park, PA, United States
| | - Devender Bidhan
- Department of Livestock Production Management, Lala Lajpat Rai University of Veterinary and Animal Sciences, Hisar, India
| | - Dipin Chander Yadav
- Department of Livestock Production Management, Lala Lajpat Rai University of Veterinary and Animal Sciences, Hisar, India
| | | | | | - Vivek Kapur
- Huck Institutes of the Life Sciences, The Pennsylvania State University, University Park, PA, United States.,Department of Animal Science, The Pennsylvania State University, University Park, PA, United States
| | - Naresh Jindal
- Department of Veterinary Public Health and Epidemiology, Lala Lajpat Rai University of Veterinary and Animal Sciences, Hisar, India
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Woldemariyam FT, Markos T, Shegu D, Abdi KD, Paeshuyse J. Evaluation of Postmortem Inspection Procedures to Diagnose Bovine Tuberculosis at Debre Birhan Municipal Abattoir. Animals (Basel) 2021; 11:2620. [PMID: 34573590 DOI: 10.3390/ani11092620] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2021] [Revised: 08/27/2021] [Accepted: 08/30/2021] [Indexed: 11/17/2022] Open
Abstract
Simple Summary Tuberculosis is transmitted from animal to human by consuming raw or under cooked meat and milk from infected animals. Careful meat inspection considering all parts of the carcass is very important. However, most abattoirs in Ethiopia are performing only routine meat inspection which does not examine the organs in detail. Failure to do so might result in undetected lesions. In this study, two methods (routine and detailed meat inspections) were compared to inspect carcasses at abattoir level. Our study clearly shows that the routine meat inspection method misses about 89% of the tuberculosis lesions identified by detailed meat inspection. Based on detailed meat inspection, overall 4.7% of lesions suggestive of bovine tuberculosis (bTB) were found in the carcass of cattle slaughtered at Debre Birhan municipality abattoir during the study period. However, the routine meat inspection only detected 0.5% of the carcasses examined as having Tuberclosis (TB) lesions. Anatomically, 66% of the lesions were found in the lungs and associated lymph nodes, 21% in lymph nodes of the head, and 13% in the lymph nodes of the gastrointestinal tract. Therefore, lesion distribution routine and detailed meat inspection and their sensitivity with respect to lesion detection was identified. Abstract Routine meat inspection in the abattoir was used to examine carcass for subsequent approval for consumption. However, the chance of missing lesions results in approval of carcass and/or the offal with lesions of tuberculosis. A cross-sectional study was conducted at Debre Birhan Municipal abattoir from October 2016 to May 2017. Lesion prevalence estimation and two meat inspection procedures’ efficacy evaluation was attempted. The breeds of the animals inspected were zebu breeds. Routine abattoir meat inspection involves visual inspection, palpation and incision of intact organs such as the liver and kidneys, as well as inspection, palpation and incision of tracheobronchial, mediastinal and prescapular lymph nodes. The detailed meat inspection involves inspection of each of the carcass. In this case, the seven lobes of the two lungs, lymph nodes and organs were also thoroughly examined. The cut surfaces were examined under bright light sources for the presence of an abscess, cheesy mass, and tubercles in detail. The study involved and compared both routine and detailed meat inspections at the abattoir. Chi-square test of independence and odds ratio were used to see the association of lesion and different risk factors. Based on detailed meat inspection, the overall lesion prevalence of bovine tuberculosis in the carcass of cattle slaughtered at Debre Birhan municipality abattoir was found to be 4.7% but only 0.5% of the carcass examined had detectable bovine tuberculosis lesions when routine abattoir meat inspection alone was used. The majority of the lesions were distributed to the lungs and associated lymph nodes. There was a significant association (p < 0.05) in TB infection rate and body condition score. In conclusion, this study has clearly indicated the prevalence of bovine tuberculosis lesions in the abattoir that are missed by routine abattoir meat inspection. In addition, it showed low sensitivity of the routine meat inspection procedure used. Hence, our study warrants immediate attention to strengthen the current meat inspection practices at Debre Birhan public abattoir.
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Ortiz AP, Perea C, Davalos E, Velázquez EF, González KS, Camacho ER, García Latorre EA, Lara CS, Salazar RM, Bravo DM, Stuber TP, Thacker TC, Robbe-Austerman S. Whole Genome Sequencing Links Mycobacterium bovis From Cattle, Cheese and Humans in Baja California, Mexico. Front Vet Sci 2021; 8:674307. [PMID: 34414224 PMCID: PMC8370811 DOI: 10.3389/fvets.2021.674307] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2021] [Accepted: 06/14/2021] [Indexed: 11/13/2022] Open
Abstract
Mycobacterium bovis causes tuberculosis (TB) in cattle, which in turn can transmit the pathogen to humans. Tuberculosis in dairy cattle is of particular concern where the consumption of raw milk and dairy products is customary. Baja California (BCA), Mexico, presents high prevalence of TB in both cattle and humans, making it important to investigate the molecular epidemiology of the disease in the region. A long-term study was undertaken to fully characterize the diversity of M. bovis genotypes circulating in dairy cattle, cheese and humans in BCA by whole-genome sequencing (WGS). During a 2-year period, 412 granulomatous tissue samples were collected from local abattoirs and 314 cheese samples were purchased from local stores and vendors in BCA and sent to the laboratory for mycobacterial culture, histology, direct PCR and WGS. For tissue samples M. bovis was recovered from 86.8%, direct PCR detected 90% and histology confirmed 85.9% as mycobacteriosis-compatible. For cheese, M. bovis was recovered from 2.5% and direct PCR detected 6% of the samples. There was good agreement between diagnostic tests. Subsequently, a total of 345 whole-genome SNP sequences were obtained. Phylogenetic analysis grouped these isolates into 10 major clades. SNP analysis revealed putative transmission clusters where the pairwise SNP distance between isolates from different dairies was ≤3 SNP. Also, human and/or cheese isolates were within 8.45 (range 0–17) and 5.8 SNP (range 0–15), respectively, from cattle isolates. Finally, a comparison between the genotypes obtained in this study and those reported previously suggests that the genetic diversity of M. bovis in BCA is well-characterized, and can be used to determine if BCA is the likely source of M. bovis in humans and cattle in routine epidemiologic investigations and future studies. In conclusion, WGS provided evidence of ongoing local transmission of M. bovis among the dairies in this high-TB burden region of BCA, as well as show close relationships between isolates recovered from humans, cheese, and cattle. This confirms the need for a coordinated One Health approach in addressing the elimination of TB in animals and humans. Overall, the study contributes to the knowledge of the molecular epidemiology of M. bovis in BCA, providing insight into the pathogen's dynamics in a high prevalence setting.
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Affiliation(s)
- Alejandro Perera Ortiz
- United States Embassy, U.S. Department of Agriculture, Animal and Plant Health Inspection Service, Mexico City, Mexico.,Programa de Doctorado en Ciencias Quimicobiológicas, Departamento de Inmunología, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Ciudad de México, Mexico
| | - Claudia Perea
- National Veterinary Services Laboratories, U.S. Department of Agriculture, Animal and Plant Health Inspection Service, Veterinary Services, Ames, IA, United States
| | - Enrique Davalos
- United States Embassy, U.S. Department of Agriculture, Animal and Plant Health Inspection Service, Mexicali, Mexico
| | - Estela Flores Velázquez
- Dirección de Campañas Zoosanitarias de la Dirección General de Salud Animal Servicio Nacional de Sanidad, Inocuidad y Calidad Agroalimentaria, Ciudad de México, Mexico
| | - Karen Salazar González
- Dirección de Campañas Zoosanitarias de la Dirección General de Salud Animal Servicio Nacional de Sanidad, Inocuidad y Calidad Agroalimentaria, Ciudad de México, Mexico
| | - Erika Rosas Camacho
- Dirección de Campañas Zoosanitarias de la Dirección General de Salud Animal Servicio Nacional de Sanidad, Inocuidad y Calidad Agroalimentaria, Ciudad de México, Mexico
| | - Ethel Awilda García Latorre
- Programa de Doctorado en Ciencias Quimicobiológicas, Departamento de Inmunología, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Ciudad de México, Mexico
| | - Citlaltepetl Salinas Lara
- Unidad de Investigación, Facultad de Estudios Superiores de Iztacala, Universidad Autónoma Nacional de México, Ciudad de México, Mexico
| | - Raquel Muñiz Salazar
- Laboratorio de Epidemiología y Ecología Molecular, Escuela Ciencias de la Salud, Universidad Autónoma de Baja California, Ensenada, Baja California, Mexico
| | - Doris M Bravo
- National Veterinary Services Laboratories, U.S. Department of Agriculture, Animal and Plant Health Inspection Service, Veterinary Services, Ames, IA, United States
| | - Tod P Stuber
- National Veterinary Services Laboratories, U.S. Department of Agriculture, Animal and Plant Health Inspection Service, Veterinary Services, Ames, IA, United States
| | - Tyler C Thacker
- National Veterinary Services Laboratories, U.S. Department of Agriculture, Animal and Plant Health Inspection Service, Veterinary Services, Ames, IA, United States
| | - Suelee Robbe-Austerman
- National Veterinary Services Laboratories, U.S. Department of Agriculture, Animal and Plant Health Inspection Service, Veterinary Services, Ames, IA, United States
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Bayissa B, Sirak A, Zewude A, Worku A, Gumi B, Berg S, Hewinson RG, Wood JLN, Jones GJ, Vordermeier HM, Ameni G. Field evaluation of specific mycobacterial protein-based skin test for the differentiation of Mycobacterium bovis-infected and Bacillus Calmette Guerin-vaccinated crossbred cattle in Ethiopia. Transbound Emerg Dis 2021; 69:e1-e9. [PMID: 34331511 PMCID: PMC8801543 DOI: 10.1111/tbed.14252] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/04/2022]
Abstract
Bovine tuberculosis (bTB) challenges intensive dairy production in Ethiopia and implementation of the test and slaughter control strategy is not economically acceptable in the country. Vaccination of cattle with Bacillus Calmette–Guerin (BCG) could be an important adjunct to control, which would require a diagnostic test to differentiate Mycobacterium bovis (M. bovis)‐infected and BCG‐vaccinated animals (DIVA role). This study describes an evaluation of a DIVA skin test (DST) that is based on a cocktail (DSTc) or fusion (DSTf) of specific (ESAT‐6, CFP‐10 and Rv3615c) M. bovis proteins in Zebu–Holstein–Friesians crossbred cattle in Ethiopia. The study animals used were 74 calves (35 BCG vaccinated and 39 unvaccinated) aged less than 3 weeks at the start of experiment and 68 naturally infected ‘TB reactor’ cows. Six weeks after vaccination, the 74 calves were tested with the DSTc and the single intradermal cervical comparative tuberculin (SICCT) test. The TB reactor cows were tested with the DSTc and the SICCT test. Reactions to the DSTc were not observed in BCG‐vaccinated and unvaccinated calves, while SICCT test reactions were detected in vaccinated calves. DSTc reactions were detected in 95.6% of the TB reactor cows and single intradermal tuberculin positive reactions were found in 98.2% (95% confidence interval, CI, 92.1–100%). The sensitivity of the DSTc was 95.6% (95% CI, 87.6–99.1%), and significantly (p < .001) higher than the sensitivity (75%, 95% CI, 63.0–84.7%) of the SICCT test at 4 mm cut‐off. DSTf and DSTc reactions were correlated (r = 0.75; 95% CI = 0.53–0.88). In conclusion, the DSTc could differentiate M. bovis‐infected from BCG‐vaccinated cattle in Ethiopia. DST had higher sensitivity than the SICCT test. Hence, the DSTc could be used as a diagnostic tool for bTB if BCG vaccination is implemented for the control of bTB in Ethiopia and other countries.
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Affiliation(s)
- Berecha Bayissa
- Aklilu Lemma Institute of Pathobiology, Addis Ababa University, Addis Ababa, Ethiopia.,Vaccine Production and Drug Formulation Directorate, National Veterinary Institute, Bishoftu, Ethiopia
| | - Asegedech Sirak
- Aklilu Lemma Institute of Pathobiology, Addis Ababa University, Addis Ababa, Ethiopia.,National Animal Health Diagnostic and Investigation Centre, Sebeta, Ethiopia
| | - Aboma Zewude
- Ethiopian Public Health Institute, Addis Ababa, Ethiopia
| | - Adane Worku
- Aklilu Lemma Institute of Pathobiology, Addis Ababa University, Addis Ababa, Ethiopia
| | - Balako Gumi
- Aklilu Lemma Institute of Pathobiology, Addis Ababa University, Addis Ababa, Ethiopia
| | - Stefan Berg
- Department of Bacteriology, Animal and Plant Health Agency, New Haw, Addlestone, Surrey, UK
| | | | - James L N Wood
- Department of Veterinary Medicine, University of Cambridge, Cambridge, UK
| | - Gareth J Jones
- Department of Bacteriology, Animal and Plant Health Agency, New Haw, Addlestone, Surrey, UK
| | | | - H Martin Vordermeier
- Department of Bacteriology, Animal and Plant Health Agency, New Haw, Addlestone, Surrey, UK.,Aberystwyth University, Ceredigion, UK
| | - Gobena Ameni
- Aklilu Lemma Institute of Pathobiology, Addis Ababa University, Addis Ababa, Ethiopia.,Department of Veterinary Medicine, College of Food and Agriculture, United Arab Emirates University, Al Ain, United Arab Emirates
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50
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Perea C, Ciaravino G, Stuber T, Thacker TC, Robbe-Austerman S, Allepuz A, de Val BP. Whole-Genome SNP Analysis Identifies Putative Mycobacterium bovis Transmission Clusters in Livestock and Wildlife in Catalonia, Spain. Microorganisms 2021; 9:microorganisms9081629. [PMID: 34442709 PMCID: PMC8401651 DOI: 10.3390/microorganisms9081629] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2021] [Revised: 07/23/2021] [Accepted: 07/28/2021] [Indexed: 12/02/2022] Open
Abstract
The high-resolution WGS analyses of MTBC strains have provided useful insight for determining sources of infection for animal tuberculosis. In Spain, tuberculosis in livestock is caused by Mycobacterium bovis and Mycobacterium caprae, where wildlife reservoirs play an important role. We analyzed a set of 125 M. bovis isolates obtained from livestock and wildlife from Catalonia to investigate strain diversity and identify possible sources and/or causes of infection. Whole-genome SNP profiles were used for phylogenetic reconstruction and pairwise SNP distance analysis. Additionally, SNPs were investigated to identify virulence and antimicrobial resistance factors to investigate clade-specific associations. Putative transmission clusters (≤12 SNPs) were identified, and associated epidemiological metadata were used to determine possible explanatory factors for transmission. M. bovis distribution was heterogeneous, with 7 major clades and 21 putative transmission clusters. In order of importance, the explanatory factors associated were proximity and neighborhood, residual infection, livestock-wildlife interaction, shared pasture, and movement. Genes related to lipid transport and metabolism showed the highest number of SNPs. All isolates were pyrazinamide resistant, and five were additionally resistant to isoniazid, but no clade-specific associations could be determined. Our findings highlight the importance of high-resolution molecular surveillance to monitor bovine tuberculosis dynamics in a low-prevalence setting.
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Affiliation(s)
- Claudia Perea
- National Veterinary Services Laboratories, U.S. Department of Agriculture, Animal and Plant Health Inspection Service, Veterinary Services, Ames, IA 50010, USA; (T.S.); (T.C.T.); (S.R.-A.)
- Correspondence:
| | - Giovanna Ciaravino
- Departament de Sanitat i Anatomia Animals, Universitat Autònoma de Barcelona, 08193 Bellaterra, Spain; (G.C.); (A.A.)
| | - Tod Stuber
- National Veterinary Services Laboratories, U.S. Department of Agriculture, Animal and Plant Health Inspection Service, Veterinary Services, Ames, IA 50010, USA; (T.S.); (T.C.T.); (S.R.-A.)
| | - Tyler C. Thacker
- National Veterinary Services Laboratories, U.S. Department of Agriculture, Animal and Plant Health Inspection Service, Veterinary Services, Ames, IA 50010, USA; (T.S.); (T.C.T.); (S.R.-A.)
| | - Suelee Robbe-Austerman
- National Veterinary Services Laboratories, U.S. Department of Agriculture, Animal and Plant Health Inspection Service, Veterinary Services, Ames, IA 50010, USA; (T.S.); (T.C.T.); (S.R.-A.)
| | - Alberto Allepuz
- Departament de Sanitat i Anatomia Animals, Universitat Autònoma de Barcelona, 08193 Bellaterra, Spain; (G.C.); (A.A.)
- IRTA, Centre de Recerca en Sanitat Animal (CReSA, IRTA-UAB), 08197 Bellaterra, Spain;
- OIE Collaborating Centre for the Research and Control of Emerging and Re-Emerging Swine Diseases in Europe (IRTA-CReSA), 08193 Bellaterra, Spain
| | - Bernat Pérez de Val
- IRTA, Centre de Recerca en Sanitat Animal (CReSA, IRTA-UAB), 08197 Bellaterra, Spain;
- OIE Collaborating Centre for the Research and Control of Emerging and Re-Emerging Swine Diseases in Europe (IRTA-CReSA), 08193 Bellaterra, Spain
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