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Langova D, Slana I, Okunkova J, Moravkova M, Florianova M, Markova J. First Evidence of the Presence of the Causative Agent of Caseous Lymphadenitis- Corynebacterium pseudotuberculosis in Dairy Products Produced from the Milk of Small Ruminants. Pathogens 2022; 11:pathogens11121425. [PMID: 36558758 PMCID: PMC9786561 DOI: 10.3390/pathogens11121425] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2022] [Revised: 11/16/2022] [Accepted: 11/22/2022] [Indexed: 11/29/2022] Open
Abstract
This study focused on the detection and quantification of selected bacteria and on the presence of enterotoxin genes in milk and dairy products from sheep and goat farms in the Czech Republic using quantitative real-time PCR (qPCR) and multiplex PCR (PCR). The presence of Corynebacterium pseudotuberculosis (CP), Mycobacterium avium subsp. paratuberculosis (MAP), Listeria monocytogenes, Staphylococcus aureus, S. aureus enterotoxin genes and methicillin-resistant Staphylococcus aureus (MRSA) was determined in 18 milk samples, 28 fresh cheeses, 20 ripened cheeses and 14 yoghurts. The serological status of the herds in relation to CP and MAP was taken into account. The most frequently detected bacterium was S. aureus (48.8%), and subsequent PCR revealed 11 MRSA positive samples. The S. aureus enterotoxin genes seg, sei and sec were detected in two goat cheeses. Cheese samples showed a statistically higher risk of SA and MRSA occurrence. CP (8.8%) and MAP (13.8%) were detected by qPCR on two different seropositive farms. Cultivation of qPCR positive CP samples on agar plates supplemented with potassium tellurite showed the presence of viable bacterium. The results obtained confirmed the necessity of monitoring the infectious status of dairy animals and rapid diagnosis of bacterial pathogens in milk and dairy products.
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Lorencova A, Babak V, Kralova A, Borilova G. Survival of Mycobacterium avium subsp. paratuberculosis in raw fermented sausages during production and storage. Meat Sci 2019; 155:20-26. [PMID: 31059938 DOI: 10.1016/j.meatsci.2019.04.023] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2018] [Revised: 03/21/2019] [Accepted: 04/25/2019] [Indexed: 12/22/2022]
Abstract
Mycobacterium avium subsp. paratuberculosis (MAP), the etiological agent of paratuberculosis, is considered to be a potential zoonotic pathogen and meat is one of the sources of MAP exposure for humans. MAP has been shown to be relatively resistant to different food processing methods, but there is a lack of information about the effects of ripening and fermentation processes on MAP survival in meat. Our results demonstrate that a short ripening process during teewurst production did not reduce MAP counts and viable mycobacteria were detected even during 4 weeks of storage. Although no viable MAP was recovered during the dry fermented sausage production process, there was no reduction in MAP count detected by real time PCR during production and storage of both sausages. Although the impact of foodborne exposure to viable MAP and/or mycobacterial components has not yet been clearly determined, the consumption of raw fermented meat products may be considered as a possible route of MAP transmission to humans.
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Affiliation(s)
- Alena Lorencova
- Food and Feed Safety Department, Veterinary Research Institute, Hudcova 70, 621 00 Brno, Czech Republic.
| | - Vladimir Babak
- Food and Feed Safety Department, Veterinary Research Institute, Hudcova 70, 621 00 Brno, Czech Republic
| | - Alena Kralova
- Food and Feed Safety Department, Veterinary Research Institute, Hudcova 70, 621 00 Brno, Czech Republic
| | - Gabriela Borilova
- Department of Meat Hygiene and Technology, Faculty of Veterinary Hygiene and Ecology, University of Veterinary and Pharmaceutical Sciences Brno, Palackeho tr. 1946/1, 612 42 Brno, Czech Republic
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Grooms DL, Bolin SR, Plastow JL, Lim A, Hattey J, Durst PT, Rust SR, Allen MS, Buskirk DD, Smith RW. Survival of Mycobacterium bovis during forage ensiling. Am J Vet Res 2019; 80:87-94. [PMID: 30605026 DOI: 10.2460/ajvr.80.1.87] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
OBJECTIVE To determine whether Mycobacterium bovis remains viable in ensiled forages. SAMPLE Alfalfa, mixed mostly grass, and corn silages. PROCEDURES For each of 10 sampling days, six 250-g replicate samples of each feedstuff were created and placed in a film pouch that could be vacuum sealed to simulate the ensiling process. Within each set of replicate samples, 4 were inoculated with 10 mL of mycobacterial liquid culture medium containing viable M bovis and 2 were inoculated with 10 mL of sterile mycobacterial liquid culture medium (controls) on day 0. Pouches were vacuum sealed and stored in the dark at room temperature. On the designated sampling day, 1 control pouch was submitted for forage analysis, and the other pouches were opened, and forage samples were obtained for M bovis culture and analysis with a PCR assay immediately and 24 hours later. RESULTS None of the control samples had positive M bovis culture or PCR assay results. Among M bovis-inoculated samples, the organism was not cultured from alfalfa and corn silage for > 2 days but was cultured from mixed mostly grass silage for 28 days after inoculation and ensiling initiation. Mycobacterium bovis DNA was detected by PCR assay in samples of all 3 feedstuffs throughout the 112-day observation period. CONCLUSIONS AND CLINICAL RELEVANCE Results suggested that properly ensiled forages would be an unlikely source for M bovis transmission to cattle. Further research is necessary to determine whether ensiling kills M bovis or forces it to become dormant and, if the latter, elucidate the conditions that cause it to revert to an infectious state.
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de Oliveira LG, Silva GOE, Barbosa CD, Sant'Anna FM, de Castro RD, Figueiredo NC, Nunes ÁC, Lage AP, de Souza MR. Lactic acid bacteria isolated from Brazilian Minas artisanal cheeses and theirin vitroantagonisms againstMycobacterium bovisBCG. INT J DAIRY TECHNOL 2018. [DOI: 10.1111/1471-0307.12540] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Letícia Goulart de Oliveira
- Departamento de Tecnologia e Inspeção de Produtos de Origem Animal, Escola de Veterinária; Universidade Federal de Minas Gerais; Av. Antônio Carlos 6627, Caixa Postal 567 31270-901 Belo Horizonte Brasil
| | - Gabriela Oliveira E Silva
- Departamento de Tecnologia e Inspeção de Produtos de Origem Animal, Escola de Veterinária; Universidade Federal de Minas Gerais; Av. Antônio Carlos 6627, Caixa Postal 567 31270-901 Belo Horizonte Brasil
| | - Cosme Damião Barbosa
- Departamento Alimentos; Faculdade de Farmácia; Universidade Federal de Minas Gerais; Av. Antônio Carlos 6627, Caixa Postal 567 31270-901 Belo Horizonte Brasil
| | - Felipe Machado Sant'Anna
- Departamento de Tecnologia e Inspeção de Produtos de Origem Animal, Escola de Veterinária; Universidade Federal de Minas Gerais; Av. Antônio Carlos 6627, Caixa Postal 567 31270-901 Belo Horizonte Brasil
| | - Renata Dias de Castro
- Departamento de Tecnologia e Inspeção de Produtos de Origem Animal, Escola de Veterinária; Universidade Federal de Minas Gerais; Av. Antônio Carlos 6627, Caixa Postal 567 31270-901 Belo Horizonte Brasil
| | - Naiara Chaves Figueiredo
- Departamento de Tecnologia e Inspeção de Produtos de Origem Animal, Escola de Veterinária; Universidade Federal de Minas Gerais; Av. Antônio Carlos 6627, Caixa Postal 567 31270-901 Belo Horizonte Brasil
| | - Álvaro Cantini Nunes
- Departamento de Biologia Geral; Instituto de Ciências Biológicas; Universidade Federal de Minas Gerais; Av. Antônio Carlos 6627, Caixa Postal 567 31270-901 Belo Horizonte Brasil
| | - Andrey Pereira Lage
- Departamento de Medicina Veterinária Preventiva, Escola de Veterinária; Universidade Federal de Minas Gerais; Av. Antônio Carlos 6627, Caixa Postal 567 31270-901 Belo Horizonte Brasil
| | - Marcelo Resende de Souza
- Departamento de Tecnologia e Inspeção de Produtos de Origem Animal, Escola de Veterinária; Universidade Federal de Minas Gerais; Av. Antônio Carlos 6627, Caixa Postal 567 31270-901 Belo Horizonte Brasil
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Aboagye G, Rowe MT. Optimisation of decontamination method and influence of culture media on the recovery of Mycobacterium avium subspecies paratuberculosis from spiked water sediments. J Microbiol Methods 2018; 150:24-28. [PMID: 29792942 DOI: 10.1016/j.mimet.2018.05.015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2018] [Revised: 05/11/2018] [Accepted: 05/18/2018] [Indexed: 10/16/2022]
Abstract
The recovery of Mycobacterium avium subspecies paratuberculosis (Map) from the environment can be a laborious process - owing to Map being fastidious, its low number, and also high numbers of other microbial populations in such settings. Protocols i.e. filtration, decontamination and modified elution were devised to recover Map from spiked water sediments. Three culture media: Herrold's Egg Yolk Media (HEYM), Middlebrook 7H10 (M-7H10) and Bactec 12B were then employed to grow the organism following its elution. In the sterile sediment samples the recovery of Map was significant between the time of exposure for each of HEYM and M-7H10, and insignificant between both media (P < 0.05). However, in the non-sterile sediment samples, the HEYM grew other background microflora including moulds at all the times of exposure whilst 4 h followed by M-7H10 culture yielded Map colonies without any background microflora. Using sterile samples only for the Bactec 12B, the recovery of Map decreased as time of exposure increased. Based on these findings, M-7H10 should be considered for the recovery of Map from the natural environment including water sediments where the recovery of diverse microbial species remains a challenge. SIGNIFICANCE OF THE STUDY Map is a robust pathogen that abides in the environment. In water treatment operations, Map associates with floccules and other particulate matter including sediments. It is also a fastidious organism, and its detection and recovery from the water environment is a laborious process and can be misleading within the abundance of other mycobacterial species owing to their close resemblance in phylogenetic traits. In the absence of a reliable recovery method, Map continues to pose public health risks through biofilm in household water tanks, hence the need for the development of a reliable recovery protocol to monitor the presence of Map in water systems in order to curtail its public health risks.
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Affiliation(s)
- G Aboagye
- Food Microbiology, The Queen's University, Belfast, Northern Ireland, United Kingdom.
| | - M T Rowe
- Food Microbiology Branch, Agri-Food and Biosciences Institute, Newforge Lane, Belfast BT9 5PX, Northern Ireland, United Kingdom
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Kralik P, Babak V, Dziedzinska R. The Impact of the Antimicrobial Compounds Produced by Lactic Acid Bacteria on the Growth Performance of Mycobacterium avium subsp. paratuberculosis. Front Microbiol 2018; 9:638. [PMID: 29666620 PMCID: PMC5891613 DOI: 10.3389/fmicb.2018.00638] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2017] [Accepted: 03/19/2018] [Indexed: 11/18/2022] Open
Abstract
Cell-free supernatants (CFSs) extracted from various lactic acid bacteria (LAB) cultures were applied to Mycobacterium avium subsp. paratuberculosis (MAP) cells to determine their effect on MAP viability. In addition, 5% lactic acid (LA; pH 3) and commercially synthetized nisin bacteriocin were also tested. This procedure was chosen in order to mimic the influence of LAB compounds during the production and storage of fermented milk products, which can be contaminated by MAP. Its presence in milk and milk products is of public concern due to the possible ingestion of MAP by consumers and the discussed role of MAP in Crohn’s disease. Propidium monoazide real-time PCR (PMA qPCR) was used for viability determination. Although all CFS showed significant effects on MAP viability, two distinct groups of CFS – effective and less effective – could be distinguished. The effective CFSs were extracted from various lactobacilli cultures, their pH values were mostly lower than 4.5, and their application resulted in >2 log10 reductions in MAP viability. The group of less effective CFS were filtered from Lactococcus and enterococci cultures, their pH values were higher than 4.5, and their effect on MAP viability was <2 log10. LA elicited a reduction in MAP viability that was similar to that of the group of less effective CFS. Almost no effect was found when using commercially synthetized nisin at concentrations of 0.1–1000 μg/ml. A combination of the influence of the type of bacteriocin, the length of its action, bacteriocin production strain, and pH are all probably required for a successful reduction in MAP viability. However, certain bacteriocins and their respective LAB strains (Lactobacillus sp.) appear to play a greater role in reducing the viability of MAP than pH.
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Affiliation(s)
- Petr Kralik
- Veterinary Research Institute, Brno, Czechia
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Zalewska B, Kaevska M, Slana I. Sequence Analysis of Changes in Microbial Composition in Different Milk Products During Fermentation and Storage. Curr Microbiol 2017; 75:202-205. [PMID: 29063967 DOI: 10.1007/s00284-017-1366-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2017] [Accepted: 10/07/2017] [Indexed: 10/18/2022]
Abstract
The objective of this study was to analyze the changes in the microbiota of milk products during fermentation and storage. Two kinds of Yoghurt, one Kefir, and one Acidophilus milk were observed during the fermentation process and storage using 16S rDNA amplicon sequencing. Cow's, goat's, raw and pasteurized milk were also examined. The most represented organisms in all manufactured products were shown to be those of the phylum Firmicutes. In some products, Proteobacteria, Bacteroidetes and Actinobacteria were also present in high amounts.
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Affiliation(s)
- Barbora Zalewska
- Veterinary Research Institute, Hudcova 70, 621 00, Brno, Czech Republic.
| | - Marija Kaevska
- Veterinary Research Institute, Hudcova 70, 621 00, Brno, Czech Republic
| | - Iva Slana
- Veterinary Research Institute, Hudcova 70, 621 00, Brno, Czech Republic
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Nowotarska SW, Nowotarski K, Grant IR, Elliott CT, Friedman M, Situ C. Mechanisms of Antimicrobial Action of Cinnamon and Oregano Oils, Cinnamaldehyde, Carvacrol, 2,5-Dihydroxybenzaldehyde, and 2-Hydroxy-5-Methoxybenzaldehyde against Mycobacterium avium subsp. paratuberculosis (Map). Foods 2017; 6:foods6090072. [PMID: 28837070 PMCID: PMC5615284 DOI: 10.3390/foods6090072] [Citation(s) in RCA: 44] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2017] [Revised: 08/08/2017] [Accepted: 08/21/2017] [Indexed: 01/04/2023] Open
Abstract
The antimicrobial modes of action of six naturally occurring compounds, cinnamon oil, cinnamaldehyde, oregano oil, carvacrol, 2,5-dihydroxybenzaldehyde, and 2-hydroxy-5-methoxybenzaldehyde, previously found to inhibit the growth of Mycobacterium avium subsp. paratuberculosis (Map) reported to infect food animals and humans and to be present in milk, cheese, and meat, were investigated. The incubation of Map cultures in the presence of all six compounds caused phosphate ions to leak into the extracellular environment in a time- and concentration-dependent manner. Cinnamon oil and cinnamaldehyde decreased the intracellular adenosine triphosphate (ATP) concentration of Map cells, whereas oregano oil and carvacrol caused an initial decrease of intracellular ATP concentration that was restored gradually after incubation at 37 °C for 2 h. Neither 2,5-dihydroxybenzaldehyde nor 2-hydroxy-5-methoxybenzaldehyde had a significant effect on intracellular ATP concentration. None of the compounds tested were found to cause leakage of ATP to the extracellular environment. Monolayer studies involving a Langmuir trough apparatus revealed that all anti-Map compounds, especially the essential oil compounds, altered the molecular packing characteristics of phospholipid molecules of model membranes, causing fluidization. The results of the physicochemical model microbial membrane studies suggest that the destruction of the pathogenic bacteria might be associated with the disruption of the bacterial cell membrane.
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Affiliation(s)
- Stella W Nowotarska
- Institute for Global Food Security, School of Biological Sciences, Queen's University Belfast, David Keir Building, Stranmillis Road, Belfast BT9 5AG, UK.
| | - Krzysztof Nowotarski
- Institute for Global Food Security, School of Biological Sciences, Queen's University Belfast, David Keir Building, Stranmillis Road, Belfast BT9 5AG, UK.
| | - Irene R Grant
- Institute for Global Food Security, School of Biological Sciences, Queen's University Belfast, David Keir Building, Stranmillis Road, Belfast BT9 5AG, UK.
| | - Christopher T Elliott
- Institute for Global Food Security, School of Biological Sciences, Queen's University Belfast, David Keir Building, Stranmillis Road, Belfast BT9 5AG, UK.
| | - Mendel Friedman
- Western Regional Research Center, Agricultural Research Service, U.S. Department of Agriculture, Albany, CA 94710, USA.
| | - Chen Situ
- Institute for Global Food Security, School of Biological Sciences, Queen's University Belfast, David Keir Building, Stranmillis Road, Belfast BT9 5AG, UK.
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9
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Mycobacterium avium subsp. paratuberculosis – An Overview of the Publications from 2011 to 2016. CURRENT CLINICAL MICROBIOLOGY REPORTS 2017. [DOI: 10.1007/s40588-017-0054-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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10
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Fiss L, Santos BL, Albuquerque PPFD, Mota RA, Marcolongo-Pereira C, Adrien MDL, Soares MP, Schild AL. Paratuberculose em bovinos de corte na região Sul do Rio Grande do Sul. PESQUISA VETERINARIA BRASILEIRA 2015. [DOI: 10.1590/s0100-736x2015000500008] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Resumo:Descrevem-se os aspectos epidemiológicos e clínico-patológicos de paratuberculose diagnosticada no sul do Rio Grande do Sul em uma propriedade de bovinos de corte. Dois bovinos criados extensivamente que apresentavam emagrecimento progressivo e diarreia crônica foram necropsiados. Os linfonodos mesentéricos estavam aumentados e edematosos. A mucosa do intestino estava espessada e enrugada com aspecto cerebroide principalmente na porção final do íleo, válvula íleo-cecal e ceco. Fragmentos dos órgãos foram fixados em formalina 10%, incluídos em parafina, cortados e corados pela técnica de hematoxilina e eosina (HE) e Ziehl-Neelsen (ZN). Fezes foram encaminhadas ao Departamento de Medicina Veterinária, Área de Medicina Veterinária Preventiva da Universidade Federal Rural de Pernambuco para o cultivo de Mycobacterium aviumsubsp.paratuberculosis em meio Lowenstein Jensen com micobactina e para realização da PCR. Histologicamente, havia enterite granulomatosa no jejuno, íleo, ceco e reto, afetando multifocalmente, também, o duodeno e o cólon. Havia, ainda, linfangite e adenite granulomatosa. Pela coloração de ZN foram observados numerosos bacilos álcool-ácido resistentes (BAAR) no interior de macrófagos, células gigantes de Langhans e nos linfonodos mesentéricos no jejuno, íleo ceco e reto. Não houve crescimento bacteriano nas amostras de fezes e cinco amostras amplificaram a sequência genética IS900 específica do Mycobacterium aviumsubesp. paratuberculosis. Pelo presente trabalho pode-se concluir que a paratuberculose apesar dos poucos relatos ocorre também em bovinos de corte criados extensivamente no sul do Rio Grande do Sul e pode ter uma prevalência maior do que se supõe na região. Alerta-se para a necessidade do diagnóstico e da tomada de medidas efetivas de controle para esta doença que, por muitos, ainda é considerada uma doença exótica no Brasil.
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Presence and persistence of Mycobacterium avium and other nontuberculous mycobacteria in animal tissues and derived foods: A review. Meat Sci 2014; 98:835-41. [DOI: 10.1016/j.meatsci.2014.08.001] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2013] [Revised: 04/25/2014] [Accepted: 08/01/2014] [Indexed: 11/23/2022]
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12
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Atreya R, Bülte M, Gerlach GF, Goethe R, Hornef MW, Köhler H, Meens J, Möbius P, Roeb E, Weiss S. Facts, myths and hypotheses on the zoonotic nature of Mycobacterium avium subspecies paratuberculosis. Int J Med Microbiol 2014; 304:858-67. [PMID: 25128370 DOI: 10.1016/j.ijmm.2014.07.006] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
Mycobacterium avium subspecies paratuberculosis (MAP) is the causative agent of paratuberculosis (Johne's disease [JD]), a chronic granulomatous enteritis in ruminants. JD is one of the most widespread bacterial diseases of domestic animals with significant economic impact. The histopathological picture of JD resembles that of Crohn's disease (CD), a human chronic inflammatory bowel disease of still unresolved aetiology. An aetiological relevance of MAP for CD has been proposed. This and the ambiguity of other published epidemiological findings raise the question whether MAP represents a zoonotic agent. In this review, we will discuss evidence that MAP has zoonotic capacity.
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Affiliation(s)
- Raja Atreya
- Medical Clinic 1, University of Erlangen-Nuermberg, Ulmenweg 18, D-91054 Erlangen, Germany
| | - Michael Bülte
- Institute of Veterinary Food Science, Faculty of Veterinary Medicine, Justus Liebig University, Frankfurter Straße 92, 35392 Gießen, Germany
| | | | - Ralph Goethe
- Institute for Microbiology, Department of Infectious Diseases, University of Veterinary Medicine Hannover, Bischofsholer Damm 15, 30173 Hannover, Germany.
| | - Mathias W Hornef
- Department of Microbiology, Hannover Medical School, Carl-Neuberg-Str. 1, 30625 Hannover, Germany
| | - Heike Köhler
- Institute of Molecular Pathogenesis, Friedrich-Loeffler-Institut (Federal Research Institute for Animal Health), Naumburger Str. 96a, 07743 Jena, Germany
| | - Jochen Meens
- Institute for Microbiology, Department of Infectious Diseases, University of Veterinary Medicine Hannover, Bischofsholer Damm 15, 30173 Hannover, Germany
| | - Petra Möbius
- Institute of Molecular Pathogenesis, Friedrich-Loeffler-Institut (Federal Research Institute for Animal Health), Naumburger Str. 96a, 07743 Jena, Germany
| | - Elke Roeb
- Justus-Liebig-University Giessen, Department of Gastroenterology, Klinikstr.33, 35392 Giessen, Germany
| | - Siegfried Weiss
- Helmholtz Centre for Infection Research, Molecular Immunology, Inhoffenstraße 7, 38124 Braunschweig, Germany
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13
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Hanifian S. Survival of Mycobacterium avium
subsp. paratuberculosis
in ultra-filtered white cheese. Lett Appl Microbiol 2014; 58:466-71. [DOI: 10.1111/lam.12215] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2013] [Revised: 01/03/2014] [Accepted: 01/05/2014] [Indexed: 12/01/2022]
Affiliation(s)
- S. Hanifian
- Department of Food Science and Technology; Tabriz Branch; Islamic Azad University; Tabriz Iran
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14
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Abstract
Multiple sclerosis (MS) is a complex autoimmune disease of the CNS. At present, MS etiology remains unknown, but it is believed to be caused by environmental factors acting on a genetic predisposition. Several studies suggest that different microorganisms could play a role in triggering autoimmunity, through immunological cross-reactivity or molecular mimicry. An overview of the knowledge regarding the bacteria involved in MS is given, placing emphasis on the newest candidate proposed: Mycobacterium avium subsp. paratuberculosis. This review will focus on discussing several arguments that might support a causal role for Mycobacterium avium subsp. paratuberculosis as an etiologic agent in MS. Additionally, a possible mechanism is postulated attempting to explain how the bacteria could initiate autoimmunity.
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Affiliation(s)
- Davide Cossu
- Department of Biomedical Sciences, Division of Experimental & Clinical Microbiology, University of Sassari, Sassari, Italy
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15
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Cook K, Flis S, Ballard C. Sensitivity of Mycobacterium avium
subsp paratuberculosis
,Escherichia coli
and Salmonella enterica
serotype Typhimurium to low pH, high organic acids and ensiling. J Appl Microbiol 2013; 115:334-45. [DOI: 10.1111/jam.12243] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2012] [Revised: 04/10/2013] [Accepted: 05/01/2013] [Indexed: 01/14/2023]
Affiliation(s)
| | - S.A. Flis
- William H. Miner Agricultural Research Institute; Chazy NY USA
| | - C.S. Ballard
- William H. Miner Agricultural Research Institute; Chazy NY USA
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16
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Klanicova B, Lorencova A, Makovcova J, Vlkova H, Kralik P, Pavlik I, Slany M. Survival of three Mycobacterium aviumsubsp. hominissuisisolates in fish products after hot smoking and frying. Int J Food Sci Technol 2013. [DOI: 10.1111/j.1365-2621.2012.03215.x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Barbora Klanicova
- Veterinary Research Institute; Hudcova 70; 621 00; Brno; Czech Republic
| | - Alena Lorencova
- Veterinary Research Institute; Hudcova 70; 621 00; Brno; Czech Republic
| | - Jitka Makovcova
- Veterinary Research Institute; Hudcova 70; 621 00; Brno; Czech Republic
| | - Hana Vlkova
- Veterinary Research Institute; Hudcova 70; 621 00; Brno; Czech Republic
| | - Petr Kralik
- Veterinary Research Institute; Hudcova 70; 621 00; Brno; Czech Republic
| | - Ivo Pavlik
- Veterinary Research Institute; Hudcova 70; 621 00; Brno; Czech Republic
| | - Michal Slany
- Veterinary Research Institute; Hudcova 70; 621 00; Brno; Czech Republic
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17
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Yamasaki EM, Brito MF, Mota RA, McIntosh D, Tokarnia CH. Paratuberculose em ruminantes no Brasil. PESQUISA VETERINARIA BRASILEIRA 2013. [DOI: 10.1590/s0100-736x2013000200001] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
A paratuberculose ou doença de Johne é uma enterite granulomatosa causada por Mycobacterium avium subsp. paratuberculosis (Map) e comumente afeta ruminantes domésticos, no entanto, pode infectar várias espécies de mamíferos. Está presente nos cinco continentes e é considerada endêmica em algumas regiões pela Organização Internacional de Epizootias (OIE). Pertence à lista de enfermidades notificáveis, que compreende as doenças transmissíveis de importância sócio-econômica e/ou em saúde-pública, cujo controle é necessário para o comércio internacional de animais e alimentos de origem animal. A importância da doença de Johne não se restringe somente aos prejuízos econômicos causados à indústria animal, mas também na possível participação do Map na íleocolite granulomatosa que afeta seres humanos, conhecida como doença de Crohn. No Brasil, a paratuberculose já foi descrita em diversas espécies de ruminantes e em vários estados. Embora os relatos naturais da enfermidade sejam pontuais, acredita-se na possibilidade da transmissão interespecífica e na disseminação do agente através da compra e venda de animais infectados. O objetivo deste artigo foi reunir as informações disponíveis referentes aos aspectos epidemiológicos, clínico-patológicos e laboratoriais da paratuberculose em bovinos, bubalinos, caprinos e ovinos no Brasil, e salientar a necessidade de implementação de medidas de controle sanitário da enfermidade no país, o que possibilitaria a melhoria da qualidade e valorização dos produtos de origem animal no mercado internacional.
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Salem M, Heydel C, El-Sayed A, Ahmed SA, Zschöck M, Baljer G. Mycobacterium avium subspecies paratuberculosis: an insidious problem for the ruminant industry. Trop Anim Health Prod 2012; 45:351-66. [PMID: 23054804 DOI: 10.1007/s11250-012-0274-2] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/19/2012] [Indexed: 12/30/2022]
Abstract
Mycobacterium avium subspecies paratuberculosis is considered as one of the most serious problems affecting the world's ruminant industry due to its significant impact on the global economy and the controversial issue that it may be pathogenic for humans. M. avium subspecies paratuberculosis is the causative agent of Johne's disease in animals and might be implicated in cases of human Crohn's disease. We provide an insight into M. avium subspecies paratuberculosis from some bacteriological, clinical, and molecular epidemiological perspectives.
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Affiliation(s)
- Mohamed Salem
- Department of Medicine and Infectious Diseases, Faculty of Veterinary Medicine, Cairo University, P.O. Box 12211, Giza, Egypt.
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