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Prada CF, Casadiego MA, Freire CCM. Evolution of Helicobacter spp: variability of virulence factors and their relationship to pathogenicity. PeerJ 2022; 10:e13120. [PMID: 36061745 PMCID: PMC9435515 DOI: 10.7717/peerj.13120] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2021] [Accepted: 02/24/2022] [Indexed: 01/12/2023] Open
Abstract
Background Virulence factors (VF) are bacteria-associated molecules that assist to colonize the host at the cellular level. Bacterial virulence is highly dynamic and specific pathogens have a broad array of VFs. The genus Helicobacter is gram-negative, microaerobic, flagellated, and mucus-inhabiting bacteria associated with gastrointestinal inflammation. To investigate about their pathogenicity, several Helicobacter species have been characterized and sequenced. Since the variability and possible origin of VF in the genus are not clear, our goal was to perform a comparative analysis of Helicobacter species in order to investigate VF variability and their evolutionary origin. Methods The complete genomes of 22 Helicobacter species available in NCBI were analyzed, using computational tools. We identifyed gain and loss events in VF genes, which were categorized in seven functional groups to determine their most parsimonious evolutionary origin. After verifying the annotation of all VF genes, a phylogeny from conserved VF organized by Helicobacter species according to gastric Helicobacter species (GHS) or enterohepatic (EHS) classification was obtained. Results Gain and loss analysis of VF orthologous in Helicobacter ssp revealed the most possible evolutionary origin for each gene set. Microevolutionary events in urease and flagella genes were detected during the evolution of the genus. Our results pointed that acquisition of ureases and adherence genes and deletion of cytotoxins in some lineages, as well as variation in VF genes copy number, would be related to host adaptation during evolution of the Helicobacter genus. Our findings provided new insights about the genetic differences between GHS and EHS and their relationship with pathogenicity.
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Affiliation(s)
- Carlos F. Prada
- Department of Genetics and Evolution, Federal University of Sao Carlos, Sao Carlos, Sao Paulo, Brazil,Grupo de Investigación de Biología y Ecología de Artrópodos. Facultad de Ciencias., Universidad del Tolima, Tolima, Colombia
| | - Maria A. Casadiego
- Grupo de Investigación de Biología y Ecología de Artrópodos. Facultad de Ciencias., Universidad del Tolima, Tolima, Colombia
| | - Caio CM Freire
- Department of Genetics and Evolution, Federal University of Sao Carlos, Sao Carlos, Sao Paulo, Brazil
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2
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Gilbert MJ, Duim B, Zomer AL, Wagenaar JA. Living in Cold Blood: Arcobacter, Campylobacter, and Helicobacter in Reptiles. Front Microbiol 2019; 10:1086. [PMID: 31191467 PMCID: PMC6530492 DOI: 10.3389/fmicb.2019.01086] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2019] [Accepted: 04/30/2019] [Indexed: 01/10/2023] Open
Abstract
Species of the Epsilonproteobacteria genera Arcobacter, Campylobacter, and Helicobacter are commonly associated with vertebrate hosts and some are considered significant pathogens. Vertebrate-associated Epsilonproteobacteria are often considered to be largely confined to endothermic mammals and birds. Recent studies have shown that ectothermic reptiles display a distinct and largely unique Epsilonproteobacteria community, including taxa which can cause disease in humans. Several Arcobacter taxa are widespread amongst reptiles and often show a broad host range. Reptiles carry a large diversity of unique and novel Helicobacter taxa, which apparently evolved in an ectothermic host. Some species, such as Campylobacter fetus, display a distinct intraspecies host dichotomy, with genetically divergent lineages occurring either in mammals or reptiles. These taxa can provide valuable insights in host adaptation and co-evolution between symbiont and host. Here, we present an overview of the biodiversity, ecology, epidemiology, and evolution of reptile-associated Epsilonproteobacteria from a broader vertebrate host perspective.
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Affiliation(s)
- Maarten J Gilbert
- Department of Infectious Diseases and Immunology, Faculty of Veterinary Medicine, Utrecht University, Utrecht, Netherlands.,Reptile, Amphibian and Fish Conservation Netherlands, Nijmegen, Netherlands
| | - Birgitta Duim
- Department of Infectious Diseases and Immunology, Faculty of Veterinary Medicine, Utrecht University, Utrecht, Netherlands.,WHO Collaborating Center for Campylobacter/OIE Reference Laboratory for Campylobacteriosis, Utrecht, Netherlands
| | - Aldert L Zomer
- Department of Infectious Diseases and Immunology, Faculty of Veterinary Medicine, Utrecht University, Utrecht, Netherlands.,WHO Collaborating Center for Campylobacter/OIE Reference Laboratory for Campylobacteriosis, Utrecht, Netherlands
| | - Jaap A Wagenaar
- Department of Infectious Diseases and Immunology, Faculty of Veterinary Medicine, Utrecht University, Utrecht, Netherlands.,WHO Collaborating Center for Campylobacter/OIE Reference Laboratory for Campylobacteriosis, Utrecht, Netherlands.,Wageningen Bioveterinary Research, Lelystad, Netherlands
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3
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Sousa DAD, Silva KVGCD, Cascon CM, Silva FBF, Mello MFVD, Leite JDS, Fonseca ABM, El-Jaick KB, Ferreira AMR. Epidermal growth factor receptor 2 immunoexpression in gastric cells of domestic cats with H. heilmannii infection. Acta Histochem 2019; 121:413-418. [PMID: 30890258 DOI: 10.1016/j.acthis.2019.03.004] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2018] [Revised: 03/05/2019] [Accepted: 03/07/2019] [Indexed: 02/07/2023]
Abstract
The aim of this study was to evaluate the immunoexpression of HER-2 in gastric cells of cats infected with Non H. pylori Helicobacter (NHPH) and to investigate an association with the presence of inflammatory infiltrate. Forty-eight paraffin-embedded gastric samples were retrieved from the archives of the Veterinary Anatomic Pathology Laboratory that had previously been shown to be positive for NHPH with the rapid urease test and cytology. Infection by NHPH was confirmed by histopathology using the Warthin-Starry staining. Hematoxylin-eosin stained sections were reviewed to evaluate inflammatory cell infiltrates. Immunohistochemical analysis was done using anti- H. pylori antibody and anti-HER-2 antibody. Molecular analysis was performed by PCR to confirm the presence of Helicobacter. Statistical analysis was performed to determine whether there was an association between the presence of H. Heilmannii and HER-2 expression in gastric samples. All samples were positive for NHPH, by immunohistochemistry, and confirmed by PCR as H. Heilmannii. On histopathologic analysis, 56,3% of the samples had lymphocytes and plasma cells infiltrates, 52,1% of which were mild and 4,2% moderate. The intensity of the inflammatory infiltrate in the gastric mucosa was significantly greater in the complete plasma membrane of parietal cells of gastric glands that had greater HER-2 immunoexpression (p = 0.0001). A statistically significant association (p = 0.007) between the H. Heilmannii infection score and the expression of HER-2 in the lateral membrane of gastric surface cells was observed. HER-2 expression may be increased in feline gastric cells infected by H. Heilmannii and in parietal cells of gastric glands with an increased inflammatory infiltrate.
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4
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Rudolf CA, Jaimes A, Espinosa-Blanco AS, Contreras M, García-Amado MA. Oral and Cloacal Helicobacter Detection in Wild and Captive Orinoco Crocodiles (Crocodylus intermedius) in Venezuela. Vector Borne Zoonotic Dis 2018; 18:567-569. [PMID: 29975587 DOI: 10.1089/vbz.2017.2210] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Helicobacter species can colonize digestive tract of animals and humans and have been associated with gastrointestinal diseases; however, this genus has not been studied in crocodiles. Our objective was to detect by PCR Helicobacter genus and Helicobacter pylori in oral and cloacal swabs from Orinoco crocodiles of two wild (Cojedes River System and Capanaparo River) and two captive breeding centers (CBCs; Masaguaral Ranch and UNELLEZ) populations. Bacterial DNA was found in 100% of oral samples (10 wild and 10 captives), and in the 95% of cloacal samples (10 wild and 9 captives). In wild populations, Helicobacter spp. was not detected, whereas in CBCs, Helicobacter was detected in 10% of the oral samples, and 66.7% of cloacal samples. H. pylori was detected in two Orinoco crocodiles. Two cloacal non-pylori Helicobacter amplicons were sequenced, showing low similarity (≤97%) to Helicobacter sequences reported. This is the first report of Helicobacter species, including H. pylori in Crocodylus intermedius from CBCs.
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Affiliation(s)
- Carla A Rudolf
- 1 Laboratorio de Fisiología Gastrointestinal, Centro de Biofísica y Bioquímica, Instituto Venezolano de Investigaciones Científicas (IVIC) , Caracas, Venezuela
| | - América Jaimes
- 1 Laboratorio de Fisiología Gastrointestinal, Centro de Biofísica y Bioquímica, Instituto Venezolano de Investigaciones Científicas (IVIC) , Caracas, Venezuela
| | - Ariel S Espinosa-Blanco
- 2 Laboratorio de Ecología y Genética de Poblaciones, Centro de Ecología, IVIC, Caracas, Venezuela .,3 Grupo de Estudios Ornitológicos y Fauna Silvestre, GEO-UPTC , Universidad Pedagógica y Tecnológica de Colombia, UPTC, Tunja, Colombia
| | - Monica Contreras
- 1 Laboratorio de Fisiología Gastrointestinal, Centro de Biofísica y Bioquímica, Instituto Venezolano de Investigaciones Científicas (IVIC) , Caracas, Venezuela
| | - María Alexandra García-Amado
- 1 Laboratorio de Fisiología Gastrointestinal, Centro de Biofísica y Bioquímica, Instituto Venezolano de Investigaciones Científicas (IVIC) , Caracas, Venezuela
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Burkitt MD, Duckworth CA, Williams JM, Pritchard DM. Helicobacter pylori-induced gastric pathology: insights from in vivo and ex vivo models. Dis Model Mech 2017; 10:89-104. [PMID: 28151409 PMCID: PMC5312008 DOI: 10.1242/dmm.027649] [Citation(s) in RCA: 69] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Gastric colonization with Helicobacter pylori induces diverse human pathological conditions, including superficial gastritis, peptic ulcer disease, mucosa-associated lymphoid tissue (MALT) lymphoma, and gastric adenocarcinoma and its precursors. The treatment of these conditions often relies on the eradication of H. pylori, an intervention that is increasingly difficult to achieve and that does not prevent disease progression in some contexts. There is, therefore, a pressing need to develop new experimental models of H. pylori-associated gastric pathology to support novel drug development in this field. Here, we review the current status of in vivo and ex vivo models of gastric H. pylori colonization, and of Helicobacter-induced gastric pathology, focusing on models of gastric pathology induced by H. pylori, Helicobacter felis and Helicobacter suis in rodents and large animals. We also discuss the more recent development of gastric organoid cultures from murine and human gastric tissue, as well as from human pluripotent stem cells, and the outcomes of H. pylori infection in these systems.
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Affiliation(s)
- Michael D Burkitt
- Gastroenterology Research Unit, Department of Cellular and Molecular Physiology, Institute of Translational Medicine, University of Liverpool, Liverpool L69 3GE, UK
| | - Carrie A Duckworth
- Gastroenterology Research Unit, Department of Cellular and Molecular Physiology, Institute of Translational Medicine, University of Liverpool, Liverpool L69 3GE, UK
| | - Jonathan M Williams
- Pathology and Pathogen Biology, Royal Veterinary College, North Mymms AL9 7TA, UK
| | - D Mark Pritchard
- Gastroenterology Research Unit, Department of Cellular and Molecular Physiology, Institute of Translational Medicine, University of Liverpool, Liverpool L69 3GE, UK
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Gilbert MJ, Duim B, Timmerman AJ, Zomer AL, Wagenaar JA. Whole genome-based phylogeny of reptile-associated Helicobacter indicates independent niche adaptation followed by diversification in a poikilothermic host. Sci Rep 2017; 7:8387. [PMID: 28827684 PMCID: PMC5566214 DOI: 10.1038/s41598-017-09091-7] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2017] [Accepted: 07/21/2017] [Indexed: 11/26/2022] Open
Abstract
Reptiles have been shown to host a significant Helicobacter diversity. In order to survive, reptile-associated Helicobacter lineages need to be adapted to the thermally dynamic environment encountered in a poikilothermic host. The whole genomes of reptile-associated Helicobacter lineages can provide insights in Helicobacter host adaptation and coevolution. These aspects were explored by comparing the genomes of reptile-, bird-, and mammal-associated Helicobacter lineages. Based on average nucleotide identity, all reptile-associated Helicobacter lineages in this study could be considered distinct species. A whole genome-based phylogeny showed two distinct clades, one associated with chelonians and one associated with lizards. The phylogeny indicates initial adaptation to an anatomical niche, which is followed by an ancient host jump and subsequent diversification. Furthermore, the ability to grow at low temperatures, which might reflect thermal adaptation to a reptilian host, originated at least twice in Helicobacter evolution. A putative tricarballylate catabolism locus was specifically present in Campylobacter and Helicobacter isolates from reptiles. The phylogeny of reptile-associated Helicobacter parallels host association, indicating a high level of host specificity. The high diversity and deep branching within these clades supports long-term coevolution with, and extensive radiation within the respective reptilian host type.
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Affiliation(s)
- Maarten J Gilbert
- Department of Infectious Diseases and Immunology, Faculty of Veterinary Medicine, Utrecht University, Utrecht, The Netherlands.
| | - Birgitta Duim
- Department of Infectious Diseases and Immunology, Faculty of Veterinary Medicine, Utrecht University, Utrecht, The Netherlands.,WHO Collaborating Centre for Campylobacter/OIE Reference Laboratory for Campylobacteriosis, Utrecht, The Netherlands
| | - Arjen J Timmerman
- Department of Infectious Diseases and Immunology, Faculty of Veterinary Medicine, Utrecht University, Utrecht, The Netherlands
| | - Aldert L Zomer
- Department of Infectious Diseases and Immunology, Faculty of Veterinary Medicine, Utrecht University, Utrecht, The Netherlands.,WHO Collaborating Centre for Campylobacter/OIE Reference Laboratory for Campylobacteriosis, Utrecht, The Netherlands
| | - Jaap A Wagenaar
- Department of Infectious Diseases and Immunology, Faculty of Veterinary Medicine, Utrecht University, Utrecht, The Netherlands.,WHO Collaborating Centre for Campylobacter/OIE Reference Laboratory for Campylobacteriosis, Utrecht, The Netherlands.,Wageningen Bioveterinary Research, Lelystad, The Netherlands
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7
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Comparative Genomics of H. pylori and Non-Pylori Helicobacter Species to Identify New Regions Associated with Its Pathogenicity and Adaptability. BIOMED RESEARCH INTERNATIONAL 2016; 2016:6106029. [PMID: 28078297 PMCID: PMC5203880 DOI: 10.1155/2016/6106029] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/21/2016] [Revised: 09/17/2016] [Accepted: 10/11/2016] [Indexed: 01/05/2023]
Abstract
The genus Helicobacter is a group of Gram-negative, helical-shaped pathogens consisting of at least 36 bacterial species. Helicobacter pylori (H. pylori), infecting more than 50% of the human population, is considered as the major cause of gastritis, peptic ulcer, and gastric cancer. However, the genetic underpinnings of H. pylori that are responsible for its large scale epidemic and gastrointestinal environment adaption within human beings remain unclear. Core-pan genome analysis was performed among 75 representative H. pylori and 24 non-pylori Helicobacter genomes. There were 1173 conserved protein families of H. pylori and 673 of all 99 Helicobacter genus strains. We found 79 genome unique regions, a total of 202,359bp, shared by at least 80% of the H. pylori but lacked in non-pylori Helicobacter species. The operons, genes, and sRNAs within the H. pylori unique regions were considered as potential ones associated with its pathogenicity and adaptability, and the relativity among them has been partially confirmed by functional annotation analysis. However, functions of at least 54 genes and 10 sRNAs were still unclear. Our analysis of protein-protein interaction showed that 30 genes within them may have the cooperation relationship.
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8
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Junginger J, Hansmann F, Herder V, Lehmbecker A, Peters M, Beyerbach M, Wohlsein P, Baumgärtner W. Pathology in Captive Wild Felids at German Zoological Gardens. PLoS One 2015; 10:e0130573. [PMID: 26086731 PMCID: PMC4472349 DOI: 10.1371/journal.pone.0130573] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2014] [Accepted: 05/22/2015] [Indexed: 12/30/2022] Open
Abstract
This retrospective study provides an overview on spontaneous diseases occurring in 38 captive wild felids submitted for necropsy by German zoological gardens between 2004 and 2013. Species included 18 tigers, 8 leopards, 7 lions, 3 cheetahs and 2 cougars with an age ranging from 0.5 to 22 years. Renal lesions, predominantly tubular alterations (intra-tubular concrements, tubular degeneration, necrosis, intra-tubular cellular debris, proteinaceous casts, dilated tubuli) followed by interstitial (lympho-plasmacytic inflammation, fibrosis, metastatic-suppurative inflammation, eosinophilic inflammation) and glomerular lesions (glomerulonephritis, glomerulosclerosis, amyloidosis) were detected in 33 out of 38 animals (87%). Tumors were found in 19 of 38 felids (50%) with 12 animals showing more than one neoplasm. The tumor prevalence increased with age. Neoplasms originated from endocrine (11), genital (8), lympho-hematopoietic (5) and alimentary organs (4) as well as the mesothelium (3). Most common neoplasms comprised uterine/ovarian leiomyomas (5/2), thyroid adenomas/adenocarcinoma (5/1), pleural mesotheliomas (3), hemangiosarcomas (2) and glossal papillomas (2). Inflammatory changes were frequently encountered in the intestine and the lung. Two young animals displayed metastatic mineralization suggestive of a vitamin D- or calcium intoxication. One tiger exhibited degenerative white matter changes consistent with an entity termed large felid leukoencephalomyelopathy. Various hyperplastic, degenerative and inflammatory changes with minor clinical significance were found in several organs. Summarized, renal lesions followed by neoplastic changes as well as inflammatory changes in lung and gastrointestinal tract represent the most frequent findings in captive wild felids living in German zoological gardens.
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Affiliation(s)
- Johannes Junginger
- Department of Pathology, University of Veterinary Medicine, Hannover, Lower Saxony, Germany
| | - Florian Hansmann
- Department of Pathology, University of Veterinary Medicine, Hannover, Lower Saxony, Germany
- Center for Systems Neuroscience, Hannover, Lower Saxony, Germany
| | - Vanessa Herder
- Department of Pathology, University of Veterinary Medicine, Hannover, Lower Saxony, Germany
- Center for Systems Neuroscience, Hannover, Lower Saxony, Germany
| | - Annika Lehmbecker
- Department of Pathology, University of Veterinary Medicine, Hannover, Lower Saxony, Germany
- Center for Systems Neuroscience, Hannover, Lower Saxony, Germany
| | - Martin Peters
- Chemisches und Veterinäruntersuchungsamt Westphalia, Arnsberg, North Rhine-Westphalia, Germany
| | - Martin Beyerbach
- Department of Biometry, Epidemiology and Information Processing, University of Veterinary Medicine, Hannover, Lower Saxony, Germany
| | - Peter Wohlsein
- Department of Pathology, University of Veterinary Medicine, Hannover, Lower Saxony, Germany
| | - Wolfgang Baumgärtner
- Department of Pathology, University of Veterinary Medicine, Hannover, Lower Saxony, Germany
- Center for Systems Neuroscience, Hannover, Lower Saxony, Germany
- * E-mail:
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9
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Flahou B, Modrý D, Pomajbíková K, Petrželková KJ, Smet A, Ducatelle R, Pasmans F, Sá RM, Todd A, Hashimoto C, Mulama M, Kiang J, Rossi M, Haesebrouck F. Diversity of zoonotic enterohepatic Helicobacter species and detection of a putative novel gastric Helicobacter species in wild and wild-born captive chimpanzees and western lowland gorillas. Vet Microbiol 2014; 174:186-94. [PMID: 25248691 DOI: 10.1016/j.vetmic.2014.08.032] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2014] [Revised: 08/26/2014] [Accepted: 08/30/2014] [Indexed: 02/01/2023]
Abstract
A number of Helicobacter species cause gastrointestinal or hepatic disease in humans, including H. pylori, gastric non-H. pylori helicobacters from animal origin and enterohepatic Helicobacter species. Little is known on the presence of Helicobacter species in great apes, our closest living relatives and potential reservoirs of microorganisms that might emerge in humans. The aim of the present study was to investigate the presence of gastric and enterohepatic Helicobacter species in African chimpanzees and gorillas. Fresh fecal samples were collected from wild endangered chimpanzees and critically endangered western lowland gorillas from different African National Parks, as well as wild-born captive animals from primate sanctuaries. Intact Helicobacter bacteria were demonstrated in feces by fluorescence in situ hybridization. Screening using a Helicobacter genus-specific PCR revealed the presence of Helicobacter DNA in the majority of animals in all groups. Cloning and sequencing of 16S rRNA gene fragments revealed a high homology to sequences from various zoonotic enterohepatic Helicobacter species, including H. cinaedi and H. canadensis. A number of gorillas and chimpanzees also tested positive using PCR assays designed to amplify part of the ureAB gene cluster and the hsp60 gene of gastric helicobacters. Phylogenetic analysis revealed the presence of a putative novel zoonotic gastric Helicobacter taxon/species. For this species, we propose the name 'Candidatus Helicobacter homininae', pending isolation and further genetic characterization. The presence of several Helicobacter species not only implies a possible health threat for these endangered great apes, but also a possible zoonotic transmission of gastric and enterohepatic helicobacters from these primate reservoirs to humans.
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Affiliation(s)
- Bram Flahou
- Department of Pathology, Bacteriology and Avian Diseases, Faculty of Veterinary Medicine, Ghent University, Salisburylaan 133, 9820 Merelbeke, Belgium.
| | - David Modrý
- Department of Pathology and Parasitology, Faculty of Veterinary Medicine, University of Brno, Palackeho 1-3, 612 42 Brno, Czech Republic; Biology Center, Institute of Parasitology, Academy of Sciences of the Czech Republic, Branišovská 31, CZ-370 05 České Budějovice, Czech Republic; CEITEC, Central European Institute of Technology, University of Veterinary and Pharmaceutical Sciences, Hudcova 70, 621 00 Brno, Czech Republic
| | - Kateřina Pomajbíková
- Department of Pathology and Parasitology, Faculty of Veterinary Medicine, University of Brno, Palackeho 1-3, 612 42 Brno, Czech Republic; Biology Center, Institute of Parasitology, Academy of Sciences of the Czech Republic, Branišovská 31, CZ-370 05 České Budějovice, Czech Republic
| | - Klára J Petrželková
- Department of Pathology and Parasitology, Faculty of Veterinary Medicine, University of Brno, Palackeho 1-3, 612 42 Brno, Czech Republic; Biology Center, Institute of Parasitology, Academy of Sciences of the Czech Republic, Branišovská 31, CZ-370 05 České Budějovice, Czech Republic; Department of Mammal Ecology, Institute of Vertebrate Biology, Academy of Sciences of the Czech Republic, Kvetna 8, 603 65 Brno, Czech Republic; Liberec ZOO, Masarykova 1347/31, 460 01 Liberec, Czech Republic
| | - Annemieke Smet
- Department of Pathology, Bacteriology and Avian Diseases, Faculty of Veterinary Medicine, Ghent University, Salisburylaan 133, 9820 Merelbeke, Belgium
| | - Richard Ducatelle
- Department of Pathology, Bacteriology and Avian Diseases, Faculty of Veterinary Medicine, Ghent University, Salisburylaan 133, 9820 Merelbeke, Belgium
| | - Frank Pasmans
- Department of Pathology, Bacteriology and Avian Diseases, Faculty of Veterinary Medicine, Ghent University, Salisburylaan 133, 9820 Merelbeke, Belgium
| | - Rui M Sá
- Department of Pathology and Parasitology, Faculty of Veterinary Medicine, University of Brno, Palackeho 1-3, 612 42 Brno, Czech Republic; Centre for Research in Anthropology, ISCTE-Instituto Universitário de Lisboa, Av. Forças Armadas, 1649-026 Lisboa, Portugal
| | - Angelique Todd
- WWF, Dzanga Sangha Protected Areas, Bangui, Central African Republic
| | - Chie Hashimoto
- Primate Research Institute, Kyoto University, Kanrin, Inuyama, Aichi 484-8506, Japan
| | - Martin Mulama
- Sweetwaters Chimpanzee Sanctuary, Ol Pejeta Conservancy, 10400 Nanyuki, Kenya
| | | | - Mirko Rossi
- Department of Food Health and Environmental Hygiene, Faculty of Veterinary Medicine, University of Helsinki, PO Box 66 (Agnes Sjöberginkatu 2), FI-00014 Helsinki, Finland
| | - Freddy Haesebrouck
- Department of Pathology, Bacteriology and Avian Diseases, Faculty of Veterinary Medicine, Ghent University, Salisburylaan 133, 9820 Merelbeke, Belgium
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10
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High prevalence and species diversity of Helicobacter spp. detected in wild house mice. Appl Environ Microbiol 2012; 78:8158-60. [PMID: 22961895 DOI: 10.1128/aem.01989-12] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023] Open
Abstract
PCR diagnostics detected 100% prevalence of Helicobacter in 425 wild house mice (Mus musculus) from across central Europe. Of seven species identified, the five most frequent were Helicobacter rodentium (78%), H. typhlonius (53%), H. hepaticus (41%), H. bilis (30%), and H. muridarum (1%). Double infections were more common (42%) than single (30%) and triple (21%) infections. Wild house mice could be considered potential reservoirs of Helicobacter strains for both humans and other vertebrates.
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11
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Smet A, Flahou B, Mukhopadhya I, Ducatelle R, Pasmans F, Haesebrouck F, Hold GL. The other Helicobacters. Helicobacter 2011; 16 Suppl 1:70-5. [PMID: 21896089 DOI: 10.1111/j.1523-5378.2011.00884.x] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
The last year has seen an interesting and important collection of evidence presented in the field of the "other" than Helicobacter pylori Helicobacters. Associations with adult ulcerative colitis and biliary/hepatic disease have been described. New insights into the immune response and subsequent pathogenesis associated with infection have also been published. Genomic advances include description of new and unique species and the complete genome description for both Helicobacter felis and Helicobacter suis. Molecular studies have also elucidated the mechanism of action of some functional components of these organisms.
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Affiliation(s)
- Annemieke Smet
- Department of Pathology, Bacteriology and Avian Diseases, Faculty of Veterinary Medicine, Ghent University, Salisburylaan 133, 9820 Merelbeke, Belgium
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12
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Buddington RK, Sangild PT. Companion animals symposium: development of the mammalian gastrointestinal tract, the resident microbiota, and the role of diet in early life. J Anim Sci 2011; 89:1506-19. [PMID: 21239667 DOI: 10.2527/jas.2010-3705] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Mammalian gastrointestinal (GI) development is guided by genetic determinants established during the evolution of mammals and matched to the natural diet and environment. Coevolution of the host GI tract (GIT) and the resident bacteria has resulted in commensal relationships that are species and even individual specific. The interactions between the host and the GI bacteria are 2-way and of particular importance during the neonatal period, when the GIT needs to adapt rapidly to the external environment, begin processing of oral foods, and acquire the ability to differentiate between and react appropriately to colonizing commensal and potentially pathogenic bacteria. During this crucial period of life, the patterns of gene expression that determine GI structural and functional development are modulated by the bacteria colonizing the previously sterile GIT of fetuses. The types and amounts of dietary inputs after birth influence GI development, species composition, and metabolic characteristics of the resident bacteria, and the interactions that occur between the bacteria and the host. This review provides overviews of the age-related changes in GIT functions, the resident bacteria, and diet, and describes how interactions among these 3 factors influence the health and nutrition of neonates and can have lifelong consequences. Necrotizing enterocolitis is a common GI inflammatory disorder in preterm infants and is provided as an example of interactions that go awry. Other enteric diseases are common in all newborn mammals, and an understanding of the above interactions will enhance efforts to support neonatal health for infants and for farm and companion animals.
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Affiliation(s)
- R K Buddington
- Department of Health and Sport Science, University of Memphis, Memphis, TN 38152, USA.
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