1
|
Gcebe N, Pierneef RE, Michel AL, Hlokwe MT. Mycobacteriosis in slaughter pigs from South Africa from 1991 to 2002: Mycobacterium spp. diversity and Mycobacterium avium complex genotypes. Front Microbiol 2023; 14:1284906. [PMID: 38033580 PMCID: PMC10687471 DOI: 10.3389/fmicb.2023.1284906] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2023] [Accepted: 10/27/2023] [Indexed: 12/02/2023] Open
Abstract
Introduction Mycobacterium avium complex (MAC) bacteria are the most prominent etiological agents of lymphadenitis in pigs. M. avium subspecies hominissuis (MAH) is a member of MAC and has been reported in many parts of the world to be the most prevalent non-tuberculous mycobacteria (NTM) to cause mycobacteriosis in humans, mainly in children. Thus, the economic and zoonotic impact of MAC species are increasingly being recognized. In South Africa, little is known about the distribution of NTM and the molecular epidemiology of M. avium in pigs. Materials and methods In this study, lymph nodes including mandibular, mesenteric, submandibular, and retropharyngeal, with tuberculosis-like lesions were collected during routine meat inspection of slaughter pigs with no disease symptoms (n = 132), between 1991 and 2002. These pigs were slaughtered at 44 abattoirs distributed across seven of the nine South African provinces. Mycobacterial culture, polymerase chain reaction (PCR), and sequencing of the Mycobacterium specific 577 bp 16S rRNA gene fragment were performed for species and subspecies identification. Results The majority of the isolates (each per sample); 114 (86.4%) were identified as MAH, 8 (6%) as MAA/M. avium subsp. silvaticum, 4 (3%) were Mycobacterium tuberculosis, 2 (1.5%) as Mycobacterium intracellulare, and 1 (0.75%) as Mycobacterium bovis. The other isolates were identified as Mycobacterium lentiflavum (0.75%), Mycobacterium novocastrense (0.75%), and a Micrococcus spp. (0.75%). Using an eight-marker MLVA typing tool, we deciphered at least nine MIRU VNTR INMV types of MAH and MAA. Discussion Identification of known zoonotic mycobacteria, including MAH, MAA, M. intracellulare, M. bovis, and M. tuberculosis, from slaughter pigs has a potential public health impact and also strengthens recognition of the potential economic impact of MAC. This study has also for the first time in South Africa, revealed MAC MIRU VNTR INMV genotypes which will aid in the future epidemiological investigation of MAC in South Africa.
Collapse
Affiliation(s)
- Nomakorinte Gcebe
- Bacteriology Laboratory, Agricultural Research Council–Onderstepoort Veterinary Research, Pretoria, South Africa
| | - Rian Ewald Pierneef
- Agricultural Research Council–Biotechnology Platform, Pretoria, South Africa
- Department of Biochemistry, Genetics and Microbiology, University of Pretoria, Pretoria, South Africa
- Centre for Bioinformatics and Computational Biology, University of Pretoria, Pretoria, South Africa
- Microbiome@UP, Department of Biochemistry, Genetics and Microbiology, University of Pretoria, Pretoria, South Africa
| | - Anita Luise Michel
- Department of Veterinary Tropical Diseases, Faculty of Veterinary Science, University of Pretoria, Pretoria, South Africa
| | - Motlatso Tiny Hlokwe
- Bacteriology Laboratory, Agricultural Research Council–Onderstepoort Veterinary Research, Pretoria, South Africa
| |
Collapse
|
2
|
Hodgeman R, Mann R, Djitro N, Savin K, Rochfort S, Rodoni B. The pan-genome of Mycobacterium avium subsp. paratuberculosis (Map) confirms ancestral lineage and reveals gene rearrangements within Map Type S. BMC Genomics 2023; 24:656. [PMID: 37907856 PMCID: PMC10619280 DOI: 10.1186/s12864-023-09752-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2023] [Accepted: 10/18/2023] [Indexed: 11/02/2023] Open
Abstract
BACKGROUND To date genomic studies on Map have concentrated on Type C strains with only a few Type S strains included for comparison. In this study the entire pan-genome of 261 Map genomes (205 Type C, 52 Type S and 4 Type B) and 7 Mycobacterium avium complex (Mac) genomes were analysed to identify genomic similarities and differences between the strains and provide more insight into the evolutionary relationship within this Mycobacterial species. RESULTS Our analysis of the core genome of all the Map isolates identified two distinct lineages, Type S and Type C Map that is consistent with previous phylogenetic studies of Map. Pan-genome analysis revealed that Map has a larger accessory genome than Mycobacterium avium subsp. avium (Maa) and Type C Map has a larger accessory genome than Type S Map. In addition, we found large rearrangements within Type S strains of Map and little to none in Type C and Type B strains. There were 50 core genes identified that were unique to Type S Map and there were no unique core genes identified between Type B and Type C Map strains. In Type C Map we identified an additional CE10 CAZyme class which was identified as an alpha/beta hydrolase and an additional polyketide and non-ribosomal peptide synthetase cluster. Consistent with previous analysis no plasmids and only incomplete prophages were identified in the genomes of Map. There were 45 hypothetical CRISPR elements identified with no associated cas genes. CONCLUSION This is the most comprehensive comparison of the genomic content of Map isolates to date and included the closing of eight Map genomes. The analysis revealed that there is greater variation in gene synteny within Type S strains when compared to Type C indicating that the Type C Map strain emerged after Type S. Further analysis of Type C and Type B genomes revealed that they are structurally similar with little to no genetic variation and that Type B Map may be a distinct clade within Type C Map and not a different strain type of Map. The evolutionary lineage of Maa and Map was confirmed as emerging after M. hominissuis.
Collapse
Affiliation(s)
- Rachel Hodgeman
- Agriculture Victoria, AgriBio, La Trobe University, Bundoora, VIC, Australia.
- School of Applied Systems Biology, AgriBio, La Trobe University, Bundoora, VIC, Australia.
| | - Rachel Mann
- Agriculture Victoria, AgriBio, La Trobe University, Bundoora, VIC, Australia
| | - Noel Djitro
- School of Applied Systems Biology, AgriBio, La Trobe University, Bundoora, VIC, Australia
| | - Keith Savin
- Agriculture Victoria, AgriBio, La Trobe University, Bundoora, VIC, Australia
| | - Simone Rochfort
- Agriculture Victoria, AgriBio, La Trobe University, Bundoora, VIC, Australia
- School of Applied Systems Biology, AgriBio, La Trobe University, Bundoora, VIC, Australia
| | - Brendan Rodoni
- Agriculture Victoria, AgriBio, La Trobe University, Bundoora, VIC, Australia
- School of Applied Systems Biology, AgriBio, La Trobe University, Bundoora, VIC, Australia
| |
Collapse
|
3
|
Byrne A, Bissonnette N, Ollier S, Tahlan K. Investigating in vivo Mycobacterium avium subsp. paratuberculosis microevolution and mixed strain infections. Microbiol Spectr 2023; 11:e0171623. [PMID: 37584606 PMCID: PMC10581078 DOI: 10.1128/spectrum.01716-23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2023] [Accepted: 07/10/2023] [Indexed: 08/17/2023] Open
Abstract
Mycobacterium avium subsp. paratuberculosis (MAP) causes Johne's Disease (JD) in ruminants, which is responsible for significant economic loss to the global dairy industry. Mixed strain infection (MSI) refers to the concurrent infection of a susceptible host with genetically distinct strains of a pathogen, whereas within-host changes in an infecting strain leading to genetically distinguishable progeny is called microevolution. The two processes can influence host-pathogen dynamics, disease progression and outcomes, but not much is known about their prevalence and impact on JD. Therefore, we obtained up to 10 MAP isolates each from 14 high-shedding animals and subjected them to whole-genome sequencing. Twelve of the 14 animals examined showed evidence for the presence of MSIs and microevolution, while the genotypes of MAP isolates from the remaining two animals could be attributed solely to microevolution. All MAP isolates that were otherwise isogenic had differences in short sequence repeats (SSRs), of which SSR1 and SSR2 were the most diverse and homoplastic. Variations in SSR1 and SSR2, which are located in ORF1 and ORF2, respectively, affect the genetic reading frame, leading to protein products with altered sequences and computed structures. The ORF1 gene product is predicted to be a MAP surface protein with possible roles in host immune modulation, but nothing could be inferred regarding the function of ORF2. Both genes are conserved in Mycobacterium avium complex members, but SSR1-based modulation of ORF1 reading frames seems to only occur in MAP, which could have potential implications on the infectivity of this pathogen. IMPORTANCE Johne's disease (JD) is a major problem in dairy animals, and concerns have been raised regarding the association of Mycobacterium avium subsp. paratuberculosis (MAP) with Crohn's disease in humans. MAP is an extremely slow-growing bacterium with low genome evolutionary rates. Certain short sequence repeats (SSR1 and SSR2) in the MAP chromosome are highly variable and evolve at a faster rate than the rest of the chromosome. In the current study, multiple MAP isolates with genetic variations such as single-nucleotide polymorphisms, and more noticeably, diverse SSRs, could simultaneously infect animals. Variations in SSR1 and SSR2 affect the products of the respective genes containing them. Since multiple MAP isolates can infect the same animal and the possibility that the pathogen undergoes further changes within the host due to unstable SSRs, this could provide a compensative mechanism for an otherwise slow-evolving pathogen to increase phenotypic diversity for overcoming host responses.
Collapse
Affiliation(s)
- Alexander Byrne
- Department of Biology, Memorial University of Newfoundland, St. John’s, Newfoundland and Labrador, Canada
| | - Nathalie Bissonnette
- Sherbrooke Research and Development Centre, Agriculture and Agri-Food Canada, Sherbrooke, Quebec, Canada
| | - Séverine Ollier
- Sherbrooke Research and Development Centre, Agriculture and Agri-Food Canada, Sherbrooke, Quebec, Canada
| | - Kapil Tahlan
- Department of Biology, Memorial University of Newfoundland, St. John’s, Newfoundland and Labrador, Canada
| |
Collapse
|
4
|
Komatsu T, Ohya K, Ota A, Nishiuchi Y, Yano H, Matsuo K, Odoi JO, Suganuma S, Sawai K, Hasebe A, Asai T, Yanai T, Fukushi H, Wada T, Yoshida S, Ito T, Arikawa K, Kawai M, Ato M, Baughn AD, Iwamoto T, Maruyama F. Unique genomic sequences in a novel Mycobacterium avium subsp. hominissuis lineage enable fine scale transmission route tracing during pig movement. One Health 2023; 16:100559. [PMID: 37363238 PMCID: PMC10288077 DOI: 10.1016/j.onehlt.2023.100559] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2022] [Revised: 04/30/2023] [Accepted: 05/04/2023] [Indexed: 06/28/2023] Open
Abstract
Mycobacterium avium subsp. hominissuis (MAH) is one of the most prevalent mycobacteria causing non-tuberculous mycobacterial disease in humans and animals. Of note, MAH is a major cause of mycobacterial granulomatous mesenteric lymphadenitis outbreaks in pig populations. To determine the precise source of infection of MAH in a pig farm and to clarify the epidemiological relationship among pig, human and environmental MAH lineages, we collected 50 MAH isolates from pigs reared in Japan and determined draft genome sequences of 30 isolates. A variable number of tandem repeat analysis revealed that most pig MAH isolates in Japan were closely related to North American, European and Russian human isolates but not to those from East Asian human and their residential environments. Historical recombination analysis revealed that most pig isolates could be classified into SC2/4 and SC3, which contain MAH isolated from pig, European human and environmental isolates. Half of the isolates in SC2/4 had many recombination events with MAH lineages isolated from humans in East Asia. To our surprise, four isolates belonged to a new lineage (SC5) in the global MAH population. Members of SC5 had few footprints of inter-lineage recombination in the genome, and carried 80 unique genes, most of which were located on lineage specific-genomic islands. Using unique genetic features, we were able to trace the putative transmission route via their host pigs. Together, we clarify the possibility of species-specificity of MAH in addition to local adaptation. Our results highlight two transmission routes of MAH, one exposure on pig farms from the environment and the other via pig movement. Moreover, our study also warns that the evolution of MAH in pigs is influenced by MAH from patients and their residential environments, even if the MAH are genetically distinct.
Collapse
Affiliation(s)
- Tetsuya Komatsu
- Aichi Prefectural Tobu Livestock Hygiene Service Center, Toyohashi, Aichi, Japan
| | - Kenji Ohya
- Faculty of Applied Biological Sciences, Gifu University, Gifu, Japan
- United Graduate School of Veterinary Sciences, Gifu University, Gifu, Japan
- Education and Research Center for Food Animal Health, Gifu University (GeFAH), Gifu, Japan
| | - Atsushi Ota
- Data Science Center, Division of Biological Science, Nara Institute of Science and Technology, Ikoma, Nara, Japan
| | - Yukiko Nishiuchi
- Office of Academic Research and Industry-Government Collaboration, Hiroshima University, Higashi-Hiroshima, Hiroshima, Japan
| | - Hirokazu Yano
- Graduate School of Life Sciences, Tohoku University, Sendai, Miyagi, Japan
| | - Kayoko Matsuo
- Faculty of Applied Biological Sciences, Gifu University, Gifu, Japan
- Kumamoto Prefectural Aso Public Health Center, Aso, Kumamoto, Japan
| | - Justice Opare Odoi
- United Graduate School of Veterinary Sciences, Gifu University, Gifu, Japan
| | - Shota Suganuma
- Faculty of Applied Biological Sciences, Gifu University, Gifu, Japan
| | - Kotaro Sawai
- Faculty of Applied Biological Sciences, Gifu University, Gifu, Japan
- Division of Transboundary Animal Disease Research, National Institute of Animal Health, National Agriculture Research Organization, Tsukuba, Ibaraki, Japan
| | - Akemi Hasebe
- Toyama Prefectural Meat Inspection Center, Imizu, Toyama, Japan
| | - Tetsuo Asai
- United Graduate School of Veterinary Sciences, Gifu University, Gifu, Japan
- Education and Research Center for Food Animal Health, Gifu University (GeFAH), Gifu, Japan
| | - Tokuma Yanai
- Faculty of Applied Biological Sciences, Gifu University, Gifu, Japan
- United Graduate School of Veterinary Sciences, Gifu University, Gifu, Japan
- Hiwa Natural History Museum, Shobara, Hiroshima, Japan
| | - Hideto Fukushi
- Faculty of Applied Biological Sciences, Gifu University, Gifu, Japan
- United Graduate School of Veterinary Sciences, Gifu University, Gifu, Japan
| | - Takayuki Wada
- Graduate School of Human Life and Ecology, Osaka Metropolitan University, Osaka, Japan
| | - Shiomi Yoshida
- Clinical Research Center, National Hospital Organization Kinki-Chuo Chest Medical Center, Sakai, Osaka, Japan
| | - Toshihiro Ito
- Laboratory of Proteome Research, Proteome Research Center, National Institutes of Biomedical Innovation, Health and Nutrition, Ibaraki, Osaka, Japan
| | - Kentaro Arikawa
- Department of Infectious Diseases, Kobe Institute of Health, Kobe, Hyogo, Japan
| | - Mikihiko Kawai
- Graduate School of Human and Environmental Studies, Kyoto University, Kyoto, Japan
| | - Manabu Ato
- Department of Mycobacteriology, Leprosy Research Center, National Institute of Infectious Diseases, Higashimurayama, Tokyo, Japan
| | - Anthony D. Baughn
- Department of Microbiology and Immunology, University of Minnesota Medical School, Minneapolis, MN, USA
| | - Tomotada Iwamoto
- Department of Infectious Diseases, Kobe Institute of Health, Kobe, Hyogo, Japan
| | - Fumito Maruyama
- Office of Academic Research and Industry-Government Collaboration, Hiroshima University, Higashi-Hiroshima, Hiroshima, Japan
- Project Research Center for Holobiome and Built Environment (CHOBE), Hiroshima University, Higashi-Hiroshima, Hiroshima, Japan
- Scientific and Technological Bioresource Nucleus, Universidad de La Frontera, Temuco, Chile
| |
Collapse
|
5
|
MIRU-VNTR Typing of Atypical Mycobacteria Isolated from the Lymph Nodes of Slaughtered Pigs from Poland. Pathogens 2022; 11:pathogens11050495. [PMID: 35631016 PMCID: PMC9144788 DOI: 10.3390/pathogens11050495] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2022] [Revised: 04/18/2022] [Accepted: 04/20/2022] [Indexed: 02/04/2023] Open
Abstract
No regulations currently require the excision of lymph nodes from pig carcasses or the thermal processing of pork before consumption. Therefore, the presence of anatomopathological lesions with signs of coagulation necrosis in lymph nodes from pigs during post-mortem inspection is concerning, as is the increasing incidence of mycobacteriosis in humans. Therefore, the aim of the present study is to verify whether mycobacteria can be isolated from tuberculous-like lesions in mandibular lymph nodes in slaughtered pigs, and whether further molecular analysis based on MIRU-VNRT, used to identify mycobacteria from the Mycobacterium avium complex, can indicate zoonotic potential. Forty of the fifty isolates from the lymph nodes with signs of coagulation necrosis were classified as Mycobacterium avium complex. MIRU-VNTR analysis allowed for the isolation of six strains, one of which was classified as M. avium subsp. paratuberculosis (MAP). Our findings confirm the presence of atypical mycobacteria in the lymph nodes of slaughtered pigs. While the isolated strains (other than MAP) do not pose a significant or direct health risk to consumers, further research and monitoring are necessary. Atypical mycobacteria can cause a wide range of diseases in children and compromised adults, and often show resistance to many classes of antibiotics, including those used to treat tuberculosis.
Collapse
|
6
|
Komatsu T, Ohya K, Ota A, Nishiuchi Y, Yano H, Matsuo K, Odoi JO, Suganuma S, Sawai K, Hasebe A, Asai T, Yanai T, Fukushi H, Wada T, Yoshida S, Ito T, Arikawa K, Kawai M, Ato M, Baughn AD, Iwamoto T, Maruyama F. Genomic features of Mycobacterium avium subsp. hominissuis isolated from pigs in Japan. GIGABYTE 2021; 2021:gigabyte33. [PMID: 36824340 PMCID: PMC9650289 DOI: 10.46471/gigabyte.33] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2021] [Accepted: 11/05/2021] [Indexed: 11/09/2022] Open
Abstract
Mycobacterium avium subsp. hominissuis (MAH) is one of the most important agents causing non-tuberculosis mycobacterial infection in humans and pigs. There have been advances in genome analysis of MAH from human isolates, but studies of isolates from pigs are limited despite its potential source of infection to human. Here, we obtained 30 draft genome sequences of MAH from pigs reared in Japan. The 30 draft genomes were 4,848,678-5,620,788 bp in length, comprising 4652-5388 coding genes and 46-75 (median: 47) tRNAs. All isolates had restriction modification-associated genes and 185-222 predicted virulence genes. Two isolates had tRNA arrays and one isolate had a clustered regularly interspaced short palindromic repeat (CRISPR) region. Our results will be useful for evaluation of the ecology of MAH by providing a foundation for genome-based epidemiological studies.
Collapse
Affiliation(s)
- Tetsuya Komatsu
- Aichi Prefectural Chuo Livestock Hygiene Service Center, Okazaki, Aichi, Japan
| | - Kenji Ohya
- Faculty of Applied Biological Sciences, Gifu University, Gifu, Gifu, Japan,United Graduate School of Veterinary Sciences, Gifu University, Gifu, Gifu, Japan
| | - Atsushi Ota
- Data Science Center, Division of Biological Science, Nara Institute of Science and Technology, Ikoma, Nara, Japan
| | - Yukiko Nishiuchi
- Office of Academic Research and Industry-Government Collaboration, Hiroshima University, Higashi-Hiroshima, Hiroshima, Japan
| | - Hirokazu Yano
- Graduate School of Life Sciences, Tohoku University, Sendai, Miyagi, Japan
| | - Kayoko Matsuo
- Kumamoto Prefectural Aso Public Health Center, Aso, Kumamoto, Japan
| | - Justice Opare Odoi
- United Graduate School of Veterinary Sciences, Gifu University, Gifu, Gifu, Japan
| | - Shota Suganuma
- Faculty of Applied Biological Sciences, Gifu University, Gifu, Gifu, Japan
| | - Kotaro Sawai
- Faculty of Applied Biological Sciences, Gifu University, Gifu, Gifu, Japan,Viral Disease and Epidemiology Research Division, National Institute of Animal Health, National Agriculture Research Organization, Tsukuba, Ibaraki, Japan
| | - Akemi Hasebe
- Toyama Prefectural Meat Inspection Center, Imizu, Toyama, Japan
| | - Tetsuo Asai
- United Graduate School of Veterinary Sciences, Gifu University, Gifu, Gifu, Japan
| | - Tokuma Yanai
- Faculty of Applied Biological Sciences, Gifu University, Gifu, Gifu, Japan,United Graduate School of Veterinary Sciences, Gifu University, Gifu, Gifu, Japan,Hiwa Natural History Museum, Shobara, Hiroshima, Japan
| | - Hideto Fukushi
- Faculty of Applied Biological Sciences, Gifu University, Gifu, Gifu, Japan,United Graduate School of Veterinary Sciences, Gifu University, Gifu, Gifu, Japan
| | - Takayuki Wada
- Graduate School of Human Life Science, Osaka City University, Osaka, Osaka, Japan
| | - Shiomi Yoshida
- Clinical Research Center, National Hospital Organization Kinki-Chuo Chest Medical Center, Sakai, Osaka, Japan
| | - Toshihiro Ito
- Laboratory of Proteome Research, Proteome Research Center, National Institutes of Biomedical Innovation, Health and Nutrition, Ibaraki, Osaka, Japan
| | - Kentaro Arikawa
- Department of Infectious Diseases, Kobe Institute of Health, Kobe, Hyogo, Japan
| | - Mikihiko Kawai
- Graduate School of Human and Environmental Studies, Kyoto University, Kyoto, Kyoto, Japan
| | - Manabu Ato
- Department of Mycobacteriology, Leprosy Research Center, National Institute of Infectious Diseases, Higashimurayama, Tokyo, Japan
| | - Anthony D Baughn
- Department of Microbiology and Immunology, University of Minnesota Medical School, Minneapolis, Minnesota, USA
| | - Tomotada Iwamoto
- Department of Infectious Diseases, Kobe Institute of Health, Kobe, Hyogo, Japan
| | - Fumito Maruyama
- Office of Academic Research and Industry-Government Collaboration, Hiroshima University, Higashi-Hiroshima, Hiroshima, Japan,Project Research Center for Holobiome and Built Environment (CHOBE), Hiroshima University, Higashi-Hiroshima, Hiroshima, Japan,Scientific and Technological Bioresource Nucleus, Universidad de La Frontera, Temuco, Chile, Corresponding author. E-mail:
| |
Collapse
|
7
|
Differential Genotyping of Mycobacterium avium Complex and Its Implications in Clinical and Environmental Epidemiology. Microorganisms 2020; 8:microorganisms8010098. [PMID: 31936743 PMCID: PMC7022546 DOI: 10.3390/microorganisms8010098] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2019] [Revised: 01/03/2020] [Accepted: 01/07/2020] [Indexed: 11/16/2022] Open
Abstract
In recent decades, the incidence and prevalence of nontuberculous mycobacteria (NTM) have greatly increased, becoming a major worldwide public health problem. Among numerous NTM species, the Mycobacterium avium complex (MAC) is the most predominant species, causing disease in humans. MAC is recognized as a ubiquitous microorganism, with contaminated water and soil being established sources of infection. However, the reason for the recent increase in MAC-associated disease has not yet been fully elucidated. Furthermore, human MAC infections are associated with a variety of infection sources. To improve the determination of infection sources and epidemiology of MAC, feasible and reliable genotyping methods are required to allow for the characterization of the epidemiology and biology of MAC. In this review, we discuss genotyping methods, such as pulsed-field gel electrophoresis, a variable number of tandem repeats, mycobacterial interspersed repetitive-unit-variable number of tandem repeats, and repetitive element sequence-based PCR that have been applied to elucidate the association between the MAC genotypes and epidemiological dominance, clinical phenotypes, evolutionary process, and control measures of infection. Characterizing the association between infection sources and the epidemiology of MAC will allow for the development of novel preventive strategies for the effective control of MAC infection.
Collapse
|
8
|
Subangkit M, Yamamoto T, Ishida M, Nomura A, Yasiki N, Sudaryatma PE, Goto Y, Okabayashi T. Genotyping of swine Mycobacterium avium subsp. hominissuis isolates from Kyushu, Japan. J Vet Med Sci 2019; 81:1074-1079. [PMID: 31155550 PMCID: PMC6715914 DOI: 10.1292/jvms.19-0048] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/03/2022] Open
Abstract
The incidence of diseases caused by nontuberculous mycobacteria (NTM) is increasing
annually worldwide, including Japan. Mycobacterium avium subsp.
hoiminissuis (MAH) is one of the most common NTM species responsible
for chronic lung diseases in animals and humans. In the current study, mycobacterial
interspersed repetitive unit-variable number tandem repeat (MIRU-VNTR) typing was employed
to characterize the genetic diversity of swine MAH isolates from Kyushu, Japan. In total,
309 isolates were obtained from the lymph nodes of 107 pigs not displaying any clinical
signs of disease, of which 307 were identified as MAH, comprising 173 strains. Based on
eight established MIRU-VNTR loci, the MAH strains represented 50 genotypes constituting
three lineages, and 29 had not been described in the Mac French National Institute for
Agricultural Research Nouzilly MIRU-VNTR (Mac-INMV) database. MAH was the dominant
M. avium complex (MAC) in pigs from Kyushu, and there was high genetic
diversity among genotype profiles of MAH from Kyushu. We identified three predominant
genotype profiles in the tested area sharing high relatedness with genotype profiles of
strains isolated in European countries. MAH was the most common NTM in pigs from Kyushu
and exhibited high diversity, with new strain-derived genotypes.
Collapse
Affiliation(s)
- Mawar Subangkit
- Laboratory of Veterinary Microbiology, Graduate School of Medicine and Veterinary Medicine, University of Miyazaki, 1-1 Gakuenkibanadai Nishi, Miyazaki, Miyazaki 889-2192, Japan.,Laboratory of Veterinary Microbiology, Department of Veterinary Science, Faculty of Agriculture, University of Miyazaki, 1-1 Gakuenkibanadai Nishi, Miyazaki, Miyazaki 889-2192, Japan.,Center for Animal Disease Control, University of Miyazaki, 1-1 Gakuenkibanadai Nishi, Miyazaki, Miyazaki 889-2192, Japan
| | - Tomoki Yamamoto
- Laboratory of Veterinary Microbiology, Department of Veterinary Science, Faculty of Agriculture, University of Miyazaki, 1-1 Gakuenkibanadai Nishi, Miyazaki, Miyazaki 889-2192, Japan.,Center for Animal Disease Control, University of Miyazaki, 1-1 Gakuenkibanadai Nishi, Miyazaki, Miyazaki 889-2192, Japan
| | - Mikiko Ishida
- Laboratory of Veterinary Microbiology, Department of Veterinary Science, Faculty of Agriculture, University of Miyazaki, 1-1 Gakuenkibanadai Nishi, Miyazaki, Miyazaki 889-2192, Japan.,Center for Animal Disease Control, University of Miyazaki, 1-1 Gakuenkibanadai Nishi, Miyazaki, Miyazaki 889-2192, Japan
| | - Arisa Nomura
- Laboratory of Veterinary Microbiology, Department of Veterinary Science, Faculty of Agriculture, University of Miyazaki, 1-1 Gakuenkibanadai Nishi, Miyazaki, Miyazaki 889-2192, Japan.,Center for Animal Disease Control, University of Miyazaki, 1-1 Gakuenkibanadai Nishi, Miyazaki, Miyazaki 889-2192, Japan
| | - Natsu Yasiki
- Laboratory of Veterinary Microbiology, Department of Veterinary Science, Faculty of Agriculture, University of Miyazaki, 1-1 Gakuenkibanadai Nishi, Miyazaki, Miyazaki 889-2192, Japan.,Center for Animal Disease Control, University of Miyazaki, 1-1 Gakuenkibanadai Nishi, Miyazaki, Miyazaki 889-2192, Japan
| | - Putu Eka Sudaryatma
- Laboratory of Veterinary Microbiology, Graduate School of Medicine and Veterinary Medicine, University of Miyazaki, 1-1 Gakuenkibanadai Nishi, Miyazaki, Miyazaki 889-2192, Japan.,Laboratory of Veterinary Microbiology, Department of Veterinary Science, Faculty of Agriculture, University of Miyazaki, 1-1 Gakuenkibanadai Nishi, Miyazaki, Miyazaki 889-2192, Japan.,Center for Animal Disease Control, University of Miyazaki, 1-1 Gakuenkibanadai Nishi, Miyazaki, Miyazaki 889-2192, Japan
| | - Yoshitaka Goto
- Laboratory of Veterinary Microbiology, Department of Veterinary Science, Faculty of Agriculture, University of Miyazaki, 1-1 Gakuenkibanadai Nishi, Miyazaki, Miyazaki 889-2192, Japan.,Center for Animal Disease Control, University of Miyazaki, 1-1 Gakuenkibanadai Nishi, Miyazaki, Miyazaki 889-2192, Japan
| | - Tamaki Okabayashi
- Laboratory of Veterinary Microbiology, Department of Veterinary Science, Faculty of Agriculture, University of Miyazaki, 1-1 Gakuenkibanadai Nishi, Miyazaki, Miyazaki 889-2192, Japan.,Center for Animal Disease Control, University of Miyazaki, 1-1 Gakuenkibanadai Nishi, Miyazaki, Miyazaki 889-2192, Japan
| |
Collapse
|
9
|
Abdissa K, Nerlich A, Beineke A, Ruangkiattikul N, Pawar V, Heise U, Janze N, Falk C, Bruder D, Schleicher U, Bogdan C, Weiss S, Goethe R. Presence of Infected Gr-1 intCD11b hiCD11c int Monocytic Myeloid Derived Suppressor Cells Subverts T Cell Response and Is Associated With Impaired Dendritic Cell Function in Mycobacterium avium-Infected Mice. Front Immunol 2018; 9:2317. [PMID: 30386330 PMCID: PMC6198055 DOI: 10.3389/fimmu.2018.02317] [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: 04/27/2018] [Accepted: 09/18/2018] [Indexed: 12/31/2022] Open
Abstract
Myeloid-derived suppressor cells (MDSC) are immature myeloid cells with immunomodulatory function. To study the mechanism by which MDSC affect antimicrobial immunity, we infected mice with two M. avium strains of differential virulence, highly virulent Mycobacterium avium subsp. avium strain 25291 (MAA) and low virulent Mycobacterium avium subsp. hominissuis strain 104 (MAH). Intraperitoneal infection with MAA, but not MAH, caused severe disease and massive splenic infiltration of monocytic MDSC (M-MDSC; Gr-1intCD11bhiCD11cint) expressing inducible NO synthase (Nos2) and bearing high numbers of mycobacteria. Depletion experiments demonstrated that M-MDSC were essential for disease progression. NO production by M-MDSC influenced antigen-uptake and processing by dendritic cells and proliferation of CD4+ T cells. M-MDSC were also induced in MAA-infected mice lacking Nos2. In these mice CD4+ T cell expansion and control of infection were restored. However, T cell inhibition was only partially relieved and arginase (Arg) 1-expressing M-MDSC were accumulated. Likewise, inhibition of Arg1 also partially rescued T cell proliferation. Thus, mycobacterial virulence results in the induction of M-MDSC that block the T cell response in a Nos2- and Arg1-dependent manner.
Collapse
Affiliation(s)
- Ketema Abdissa
- Institute for Microbiology, University of Veterinary Medicine Hannover, Hannover, Germany.,Department of Molecular Immunology, Helmholtz Centre for Infection Research, Braunschweig, Germany
| | - Andreas Nerlich
- Institute for Microbiology, University of Veterinary Medicine Hannover, Hannover, Germany
| | - Andreas Beineke
- Institute for Pathology, University of Veterinary Medicine Hannover, Hannover, Germany
| | | | - Vinay Pawar
- Department of Molecular Immunology, Helmholtz Centre for Infection Research, Braunschweig, Germany
| | - Ulrike Heise
- Mouse Pathology, Helmholtz Centre for Infection Research, Braunschweig, Germany
| | - Nina Janze
- Institute for Microbiology, University of Veterinary Medicine Hannover, Hannover, Germany
| | - Christine Falk
- Institute of Transplant Immunology, Hannover Medical School, Hannover, Germany
| | - Dunja Bruder
- Immune Regulation Group, Helmholtz Centre for Infection Research, Braunschweig, Germany.,Institute of Medical Microbiology and Hospital Hygiene, Otto-von-Guericke University Magdeburg, Magdeburg, Germany
| | - Ulrike Schleicher
- Mikrobiologisches Institut - Klinische Mikrobiologie, Immunologie und Hygiene, Friedrich-Alexander-Universität Erlangen-Nürnberg, Universitätsklinikum Erlangen, Erlangen, Germany.,Medical Immunology Campus Erlangen, FAU Erlangen-Nürnberg, Erlangen, Germany
| | - Christian Bogdan
- Mikrobiologisches Institut - Klinische Mikrobiologie, Immunologie und Hygiene, Friedrich-Alexander-Universität Erlangen-Nürnberg, Universitätsklinikum Erlangen, Erlangen, Germany.,Medical Immunology Campus Erlangen, FAU Erlangen-Nürnberg, Erlangen, Germany
| | - Siegfried Weiss
- Department of Molecular Immunology, Helmholtz Centre for Infection Research, Braunschweig, Germany.,Institute of Immunology, Hannover Medical School, Hannover, Germany
| | - Ralph Goethe
- Institute for Microbiology, University of Veterinary Medicine Hannover, Hannover, Germany
| |
Collapse
|
10
|
Hulinova Stromerova N, Faldyna M. Mycobacterium avium complex infection in pigs: A review. Comp Immunol Microbiol Infect Dis 2018; 57:62-68. [PMID: 30017080 DOI: 10.1016/j.cimid.2018.06.005] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2017] [Revised: 04/18/2018] [Accepted: 06/10/2018] [Indexed: 11/19/2022]
Abstract
Mycobacterial infections in pigs are caused particularly by the Mycobacterium avium complex (MAC) and these infections lead to great economic losses mainly within the countries with high pork meat production. The importance of the MAC infections in humans is rising because of its higher prevalence and also higher mortality rates particularly in advanced countries. In addition, treatment of the MAC infections in humans tends to be complicated because of its increasing resistance to antimicrobial agents. Several studies across Europe have documented the MAC occurrence in the slaughtered pigs - not only in their lymph nodes and tonsils, which are the most frequent, but also in the diaphragmas, other organs and not least in meat. This is why we need both more specific and more sensitive methods for the MAC infection detection. Different PCR assays were established as well as advanced intravital testing by the gamma interferon release test. On the other hand, tuberculin skin test is still one of the cheapest methods of mycobacterial infections detection.
Collapse
Affiliation(s)
- Nikola Hulinova Stromerova
- State Veterinary Institute Olomouc, Jakoubka ze Stříbra 1, 779 00 Olomouc, Czech Republic; Veterinary Research Institute, Hudcova 70, 621 00 Brno, Czech Republic
| | - Martin Faldyna
- Veterinary Research Institute, Hudcova 70, 621 00 Brno, Czech Republic.
| |
Collapse
|
11
|
Zhu L, Peng Y, Ye J, Wang T, Bian Z, Qin Y, Zhang H, Ding J. Isolation, Identification, and Characterization of a New Highly Pathogenic Field Isolate of Mycobacterium avium spp. avium. Front Vet Sci 2018; 4:243. [PMID: 29379790 PMCID: PMC5775284 DOI: 10.3389/fvets.2017.00243] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2017] [Accepted: 12/20/2017] [Indexed: 01/27/2023] Open
Abstract
Avian tuberculosis is a chronic, contagious zoonotic disease affecting birds, mammals, and humans. The disease is most often caused by Mycobacterium avium spp. avium (MAA). Strain resources are important for research on avian tuberculosis and vaccine development. However, there has been little reported about the newly identified MAA strain in recent years in China. In this study, a new strain was isolated from a fowl with symptoms of avian tuberculosis by bacterial culture. The isolated strain was identified to be MAA by culture, staining, and biochemical and genetic analysis, except for different colony morphology. The isolated strain was Ziehl-Zeelsen staining positive, resistant to p-nitrobenzoic acid, and negative for niacin production, Tween-80 hydrolysis, heat stable catalase and nitrate production. The strain had the DnaJ gene, IS1245, and IS901, as well. Serum agglutination indicated that the MAA strain was of serotype 1. The MAA strain showed strong virulence via mortality in rabbits and chickens. The prepared tuberculin of the MAA strain had similar potency compared to the MAA reference strain and standard tuberculin via a tuberculin skin test. Our studies suggested that this MAA strain tends to be a novel subtype, which might enrich the strain resource of avian tuberculosis.
Collapse
Affiliation(s)
- Liangquan Zhu
- China Institute of Veterinary Drug Control, Beijing, China
| | - Yong Peng
- China Institute of Veterinary Drug Control, Beijing, China
| | - Junxian Ye
- China Institute of Veterinary Drug Control, Beijing, China
| | - Tuanjie Wang
- China Institute of Veterinary Drug Control, Beijing, China
| | - Zengjie Bian
- China Institute of Veterinary Drug Control, Beijing, China
| | - Yuming Qin
- China Institute of Veterinary Drug Control, Beijing, China
| | - He Zhang
- China Institute of Veterinary Drug Control, Beijing, China
| | - Jiabo Ding
- China Institute of Veterinary Drug Control, Beijing, China
| |
Collapse
|
12
|
Abstract
Mycobacterium avium hominissuis is the most important causative agent of chronic nontuberculous lymphadenitis in children. Despite a ubiquitous occurrence of the bacteria in the environment, the disease is a rare entity, and so far no source of infection has been formally identified. The current state of knowledge regarding possible sources of M. avium hominissuis, especially where children are concerned, is summarized here. An analysis of the seasonal variation of M. avium lymphadenitis in children leads to a new hypothesis regarding the probable source of infection of M. avium hominissuis, where global trade of alimentary products might be involved.
Collapse
Affiliation(s)
- Johanna Thegerström
- a Department of Clinical Physiology , Kalmar County Hospital , Kalmar , Sweden
| |
Collapse
|
13
|
Bruffaerts N, Vluggen C, Roupie V, Duytschaever L, Van den Poel C, Denoël J, Wattiez R, Letesson JJ, Fretin D, Rigouts L, Chapeira O, Mathys V, Saegerman C, Huygen K. Virulence and immunogenicity of genetically defined human and porcine isolates of M. avium subsp. hominissuis in an experimental mouse infection. PLoS One 2017; 12:e0171895. [PMID: 28182785 PMCID: PMC5300754 DOI: 10.1371/journal.pone.0171895] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2016] [Accepted: 01/27/2017] [Indexed: 12/02/2022] Open
Abstract
Mycobacterium avium subsp. hominissuis (Mah) represents a health concern for humans and to a lesser extent for pigs, but its zoonotic potential remains elusive. Using multispacer sequence typing (MST) we previously identified 49 different genotypes of Mah among Belgian clinical and porcine isolates, with 5 MSTs shared by both hosts. Using experimental intranasal infection of BALB/c mice, we compared the virulence and immunogenicity of porcine and clinical human isolates with shared genotype or with a genotype only found in humans or pigs. Bacterial replication was monitored for 20 weeks in lungs, spleen and liver and mycobacteria specific spleen cell IFN-γ, IL-10 and IL-17 production as well as serum antibody responses were analyzed. Isolates varied in virulence, with human and porcine isolates sharing MST22 genotype showing a thousand fold higher bacterial replication in lungs and more dissemination to spleen and liver than the human and porcine MST91 isolates. Virulent MST22 type was also associated with progressive suppression of IFN-γ and IL-17 responses, and increased IL-10 production. Whole genome sequencing of the two virulent isolates with MST22 genotype and two avirulent isolates of genotype MST91 and comparison with two well-studied M. avium subsp. hominissuis reference strains i.e. Mah 104 and Mah TH135, identified in the two MST22 isolates nine specific virulence factors of the mammalian cell entry family, that were identical with Mah 104 strain. Despite the obvious limitations of the mouse model, a striking link of virulence and identity at the genome level of porcine and human isolates with the same multisequence type, for which no correlation of place of residence (humans) or farm of origin (pigs) was observed, seems to point to the existence in the environment of certain genotypes of Mah which may be more infectious both for humans and pigs than other genotypes.
Collapse
Affiliation(s)
- Nicolas Bruffaerts
- Service Immunology, Operational Direction Communicable and infectious Diseases, Scientific Institute of Public Health, Brussels, Belgium
- * E-mail: (NB); (KH)
| | - Christelle Vluggen
- Service Bacterial diseases, Operational Direction Communicable and infectious Diseases, Scientific Institute of Public Health, Brussels, Belgium
| | - Virginie Roupie
- Unit Bacterial Zoonoses of livestock, Operational Direction Bacterial Diseases, Veterinary and Agrochemical Research Centre, Brussels, Belgium
| | - Lucille Duytschaever
- Unit Bacterial Zoonoses of livestock, Operational Direction Bacterial Diseases, Veterinary and Agrochemical Research Centre, Brussels, Belgium
- Research Unit in Epidemiology and Risk Analysis applied to Veterinary Sciences, Fundamental and Applied Research for Animal and Health, Université of Liège, Liège, Belgium
| | - Christophe Van den Poel
- Service Immunology, Operational Direction Communicable and infectious Diseases, Scientific Institute of Public Health, Brussels, Belgium
| | - Joseph Denoël
- Research Unit in Epidemiology and Risk Analysis applied to Veterinary Sciences, Fundamental and Applied Research for Animal and Health, Université of Liège, Liège, Belgium
| | - Ruddy Wattiez
- Service Protéomique et Microbiologie, Université de Mons, Mons, Belgium
| | - Jean-Jacques Letesson
- Unité de Recherche en Biologie des Microorganismes, Université de Namur, Namur, Belgium
| | - David Fretin
- Unit Bacterial Zoonoses of livestock, Operational Direction Bacterial Diseases, Veterinary and Agrochemical Research Centre, Brussels, Belgium
| | - Leen Rigouts
- Department Biomedical Sciences, University of Antwerp, Antwerp, Belgium
- Unit Mycobacteriology, Institute of Tropical Medicine, Antwerp, Belgium
| | | | - Vanessa Mathys
- Service Bacterial diseases, Operational Direction Communicable and infectious Diseases, Scientific Institute of Public Health, Brussels, Belgium
| | - Claude Saegerman
- Research Unit in Epidemiology and Risk Analysis applied to Veterinary Sciences, Fundamental and Applied Research for Animal and Health, Université of Liège, Liège, Belgium
| | - Kris Huygen
- Service Immunology, Operational Direction Communicable and infectious Diseases, Scientific Institute of Public Health, Brussels, Belgium
- * E-mail: (NB); (KH)
| |
Collapse
|
14
|
Schinköthe J, Möbius P, Köhler H, Liebler-Tenorio EM. Experimental Infection of Goats with Mycobacterium avium subsp. hominissuis: a Model for Comparative Tuberculosis Research. J Comp Pathol 2016; 155:218-230. [PMID: 27426001 DOI: 10.1016/j.jcpa.2016.06.008] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2015] [Revised: 05/17/2016] [Accepted: 06/07/2016] [Indexed: 11/30/2022]
Abstract
Mycobacterium avium subsp. hominissuis (MAH) is an opportunistic pathogen that causes infections in man and animals. In this study, 18 goat kids were inoculated orally with a high dose of MAH. One group of goats (n = 9) developed severe clinical disease for up to 2-3 months post inoculation (mpi). At necropsy examination, there were ulcerative and granulomatous lesions in gut-associated lymphoid tissue and granulomas with extensive necrosis in the lymph nodes (LNs) of the cranial mesenteric lymphocentre (CMLNs). Culture revealed growth of MAH in all lesions with systemic spread. A second group of goats were healthy at the end of the trial (13 mpi); however, all had extensive granulomas in the CMLNs, but no extra-intestinal spread of bacteria. Moderate faecal shedding occurred in all goats up to 2 mpi. Microscopical characterization of the granulomas revealed solid non-necrotic, necrotic, calcified and fibrocalcified granulomas with resemblance to those seen in human and bovine tuberculosis. The two different courses of disease, with highly heterogenic lesions, systemic spread in goats with severe clinical disease and the development of granulomas of all stages in the surviving goats, makes the experimental infection of goats with MAH a valuable model for tuberculosis research. This model might allow new insights into host-pathogen interaction and anti-mycobacterial compound testing.
Collapse
Affiliation(s)
- J Schinköthe
- Friedrich-Loeffler-Institut, Federal Research Institute for Animal Health, Südufer 10, Greifswald, Insel Riems, Germany
| | - P Möbius
- Friedrich-Loeffler-Institut, Federal Research Institute for Animal Health, Naumburger Str. 96a, Jena, Germany
| | - H Köhler
- Friedrich-Loeffler-Institut, Federal Research Institute for Animal Health, Naumburger Str. 96a, Jena, Germany
| | - E M Liebler-Tenorio
- Friedrich-Loeffler-Institut, Federal Research Institute for Animal Health, Naumburger Str. 96a, Jena, Germany.
| |
Collapse
|
15
|
Rónai Z, Csivincsik Á, Dán Á, Gyuranecz M. Molecular analysis and MIRU-VNTR typing of Mycobacterium avium subsp. avium, 'hominissuis' and silvaticum strains of veterinary origin. INFECTION GENETICS AND EVOLUTION 2016; 40:192-199. [PMID: 26964909 DOI: 10.1016/j.meegid.2016.03.004] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/28/2015] [Revised: 03/02/2016] [Accepted: 03/05/2016] [Indexed: 10/22/2022]
Abstract
Besides Mycobacterium avium subsp. paratuberculosis (MAP), M. avium subsp. avium (MAA), M. avium subsp. silvaticum (MAS), and 'M. avium subsp. hominissuis' (MAH) are equally important members of M. avium complex, with worldwide distribution and zoonotic potential. Genotypic discrimination is a prerequisite to epidemiological studies which can facilitate disease prevention through revealing infection sources and transmission routes. The primary aim of this study was to identify the genetic diversity within 135 MAA, 62 MAS, and 84 MAH strains isolated from wild and domestic mammals, reptiles and birds. Strains were tested for the presence of large sequence polymorphism LSP(A)17 and were submitted to Mycobacterial interspersed repetitive units-variable-number tandem repeat (MIRU-VNTR) analysis at 8 loci, including MIRU1, 2, 3, and 4, VNTR25, 32, and 259, and MATR9. In 12 strains hsp65 sequence code type was also determined. LSP(A)17 was present only in 19.9% of the strains. All LSP(A)17 positive strains belonged to subspecies MAH. The discriminatory power of the MIRU-VNTR loci set used reached 0.9228. Altogether 54 different genotypes were detected. Within MAH, MAA, and MAS strains 33, 16, and 5 different genotypes were observed. The described genotypes were not restricted to geographic regions or host species, but proved to be subspecies specific. Our knowledge about MAS is limited due to isolation and identification difficulties. This is the first study including a large number of MAS field strains. Our results demonstrate the high diversity of MAH and MAA strains and the relative uniformity of MAS strains.
Collapse
Affiliation(s)
- Zsuzsanna Rónai
- Veterinary Diagnostic Directorate, National Food Chain Safety Office (NFCSO), P.O. Box 2, 1581 Budapest, Hungary.
| | - Ágnes Csivincsik
- University of Kaposvar, Diagnostic Imaging and Radiation Oncology, Guba Sándor u. 40., 7400 Kaposvár, Hungary
| | - Ádám Dán
- Veterinary Diagnostic Directorate, National Food Chain Safety Office (NFCSO), P.O. Box 2, 1581 Budapest, Hungary
| | - Miklós Gyuranecz
- Institute for Veterinary Medical Research, Centre for Agricultural Research, Hungarian Academy of Sciences, Hungária krt. 21., 1143 Budapest, Hungary
| |
Collapse
|
16
|
Tuberculosis in swine co-infected withMycobacterium aviumsubsp.hominissuisandMycobacterium bovisin a cluster from Argentina. Epidemiol Infect 2014; 143:966-74. [DOI: 10.1017/s095026881400332x] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
Abstract
SUMMARYIn Argentina little is known about the epidemiology of tuberculosis (TB) infection in swine. We characterized the epidemiological dynamics ofMycobacterium aviumcomplex (MAC) infection in a swine population of Argentina using molecular tools and spatial analysis techniques. Isolates (n = 196) obtained from TB-like lesions (n = 200) were characterized by polymerase chain reaction. The isolates were positive to eitherM. bovis(IS6110) (n = 160) orM. avium(IS1245) (n= 16) while the remaining 20 (10·2%) isolates were positive to bothM. bovisandM. avium. The detection of both bacteria together suggests co-infection at the animal level. In addition, MAC-positive isolates (n = 36) were classified asM. aviumsubsp.avium(MAA) (n = 30) andM. aviumsubsp.hominissuis(MAH) (n = 6), which resulted in five genotypes when they were typed using mycobacterial interspersed repetitive unit, variable number of tandem repeats (MIRU-VNTR). One significant (P = 0·017) spatial clustering of genotypes was detected, in which the proportion of MAH isolates was larger than expected under the null hypothesis of even distribution of genotypes. These results show that in Argentina the proportion of TB cases in pigs caused byM. aviumis larger than that reported in earlier studies. The proportion ofM. bovis–MAC co-infections was also higher than in previous reports. These results provide valuable information on the epidemiology of MAC infection in swine in Argentina.
Collapse
|
17
|
Agdestein A, Olsen I, Jørgensen A, Djønne B, Johansen TB. Novel insights into transmission routes of Mycobacterium avium in pigs and possible implications for human health. Vet Res 2014; 45:46. [PMID: 24742183 PMCID: PMC4021465 DOI: 10.1186/1297-9716-45-46] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2014] [Accepted: 04/01/2014] [Indexed: 11/10/2022] Open
Abstract
Mycobacterium avium infection is a severe condition in humans, whereas pigs are often subclinically infected. Pig carcasses represent a possible source of human infection. Faecal excretion of M. avium was recently demonstrated in experimentally infected pigs, along with detection of M. avium in apparently normal lymph nodes. The present study investigates faecal excretion in naturally infected herds and the presence of live mycobacteria in lymph nodes. Two pig herds (A and B), with a history of sporadically suspected M. avium infection were sampled. Herd B used peat, as opposed to Herd A. Samples from peat, sawdust, drinking water, faeces and lymph nodes were collected. Identification of mycobacteria was performed by 16S rDNA sequencing and PCR. Mycobacterium avium isolates were analysed by Multi-Locus Variable Number of Tandem repeat Analysis (MLVA). Mycobacterium avium subsp. hominissuis was detected in samples of faeces, peat and lymph nodes from Herd B, often with identical MLVA profiles. Additionally, other non-tuberculous mycobacteria (NTM) were found in the same material. The absence of macroscopic lymph node lesions in the presence of M. avium subsp. hominissuis was frequently demonstrated. In Herd A, only one NTM isolate, which proved not to be M. avium, was found. Faeces might facilitate transmission of M. avium subsp. hominissuis between pigs and maintain the infection pressure in herds. The low incidence of macroscopic lesions together with the massive presence of M. avium subsp. hominissuis in lymph nodes from pigs kept on peat raises questions related to animal husbandry, food safety and human health.
Collapse
Affiliation(s)
| | | | | | | | - Tone B Johansen
- Norwegian Veterinary Institute, P,O, Box 750 Sentrum, N-0106 Oslo, Norway.
| |
Collapse
|
18
|
Agdestein A, Jones A, Flatberg A, Johansen TB, Heffernan IA, Djønne B, Bosco A, Olsen I. Intracellular growth of Mycobacterium avium subspecies and global transcriptional responses in human macrophages after infection. BMC Genomics 2014; 15:58. [PMID: 24450835 PMCID: PMC3906092 DOI: 10.1186/1471-2164-15-58] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2013] [Accepted: 01/10/2014] [Indexed: 11/10/2022] Open
Abstract
Background Mycobacterium avium subsp. avium (Maa) and M. avium subsp. hominissuis (Mah) are environmental mycobacteria and significant opportunistic pathogens. Mycobacterium avium infections in humans and pigs are mainly due to Mah. It is not known whether this is caused by a difference in virulence or difference in exposure to the two subspecies. The aim of the present study was to investigate the ability of the M. avium subspecies to replicate intracellularly and to characterise the gene expression program triggered by infection of human primary macrophages. Results All isolates were able to invade and persist within human macrophages. However, intracellular replication was only evident in cells infected with the two Maa isolates. Transcriptional responses to the isolates were characterized by upregulation of genes involved in apoptosis, immune- and inflammatory response, signal transduction and NF-kB signaling, cell proliferation and T-cell activation. Although similar pathways and networks were perturbed by the different isolates, the response to the Maa subspecies was exaggerated, and there was evidence of increased activation of type I and II interferon signaling pathways. Conclusion Mycobacterium avium isolates of different genetic characteristics invaded monocytes and induced different degree of macrophage activation. Isolates of Maa were able to replicate intracellularly suggesting that differences in exposure, uptake or induction of adaptive immunity are more likely explanations for the difference in prevalence between M. avium subspecies.
Collapse
Affiliation(s)
| | | | | | | | | | | | | | - Ingrid Olsen
- Norwegian Veterinary Institute, PO, Box 750 Sentrum, N-0106 Oslo, Norway.
| |
Collapse
|
19
|
Pérez de Val B, Grau-Roma L, Segalés J, Domingo M, Vidal E. Mycobacteriosis outbreak caused by Mycobacterium avium subsp. avium detected through meat inspection in five porcine fattening farms. Vet Rec 2013; 174:96. [PMID: 24336794 DOI: 10.1136/vr.101886] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Affiliation(s)
- B Pérez de Val
- Centre de Recerca en Sanitat Animal (CReSA), UAB-IRTA, Bellaterra, Barcelona, Catalonia 08193, Spain
| | | | | | | | | |
Collapse
|
20
|
El-Sayed A, Natur S, Abdou NEM, Salem M, Hassan A, Zschöck M. Genotyping of Mycobacterium aviumfield isolates based on repetitive elements. Int J Vet Sci Med 2013. [DOI: 10.1016/j.ijvsm.2013.05.005] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Affiliation(s)
- A. El-Sayed
- Staatliches Untersuchungsamt Hessen (LHL), Giessen, Germany
- Lab. of Molecular Epidemiology (LME), Cairo University, Cairo, Egypt
| | - S. Natur
- Staatliches Untersuchungsamt Hessen (LHL), Giessen, Germany
| | - Nadra-Elwgoud M.I. Abdou
- Department of Medicine and Infectious Diseases, Faculty of Veterinary Medicine, Cairo University, Egypt
| | - M. Salem
- Lab. of Molecular Epidemiology (LME), Cairo University, Cairo, Egypt
- Department of Medicine and Infectious Diseases, Faculty of Veterinary Medicine, Cairo University, Egypt
| | - A. Hassan
- Animal Health Service, Amsbergstraat 7, Postbus 9, 7400 AA Deventer, The Netherlands
| | - M. Zschöck
- Staatliches Untersuchungsamt Hessen (LHL), Giessen, Germany
| |
Collapse
|